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NDQ_015336 | Which statement is part of Daltons atomic theory? | a. All substances are made of atoms, b. Atoms can be divided into smaller particles, c. Atoms form when compounds join together, d. All atoms of the same element have the same number of protons | a | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015337 | Daltons atomic models were most similar to | a. bowling balls, b. plum puddings, c. planetary orbits, d. blades of a fan | a | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015338 | Thomsons research involved | a. gold foil and alpha particles, b. electric current and a vacuum tube, c. gases and pressure, d. neutrons and back scattering | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015339 | In the plum pudding model of the atom, the plums represent | a. protons, b. neutrons, c. nuclei, d. electrons | d | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015340 | In the planetary model, the planets represent | a. alpha particles, b. gold atoms, c. electrons, d. positive charges | c | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015341 | Aristotle rejected Democrituss idea of the atom. | a. true, b. false | a | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015342 | Dalton thought that atoms could be created or destroyed. | a. true, b. false | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015343 | Daltons atomic theory was later completely rejected. | a. true, b. false | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015344 | Ernest Rutherford discovered neutrons. | a. true, b. false | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015345 | Thomson showed that electric charge is carried by particles of matter. | a. true, b. false | a | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015346 | The pudding in the plum pudding model represents positive charge. | a. true, b. false | a | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015347 | Democritus represented atoms with solid wooden balls. | a. true, b. false | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015348 | In the gold foil experiments, most of the alpha particles were deflected backward from the gold foil. | a. true, b. false | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015349 | Dalton was the first scientist to observe atoms with a microscope. | a. true, b. false | b | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015350 | Electrons flow through a vacuum tube from the negative end to the positive end. | a. true, b. false | a | Lesson: history of the atom
Democritus Introduces the Atom:
The history of the atom begins around 450 B.C. with a Greek philosopher named Democritus (see Figure 5.7). Democritus wondered what would happen if you cut a piece of matter, such as an apple, into smaller and smaller pieces. He thought that a point would be ... |
NDQ_015352 | Which statement about energy levels is false? | a. They are located at fixed distances from the nucleus of the atom, b. They are the only places where electrons can be found, c. They have more energy when they are farther from the nucleus, d. They all have the same number of electrons | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015354 | What are orbitals? | a. regions in the electron cloud where electrons are most likely to be, b. fixed paths in which electrons orbit the nucleus, c. places where electron waves are unstable, d. none of the above | a | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015356 | An electron emits energy when it jumps from | a. a proton to a neutron, b. an electron cloud to an orbital, c. an orbital to the atomic nucleus, d. a higher energy level to a lower energy level | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015357 | How many electrons can there be in energy level 1? | a. 0, b. 1, c. 2, d. 3 | c | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015360 | Bohrs model of the atom differs from Rutherfords model in the | a. placement of the nucleus, b. charge of the nucleus, c. number of electrons, d. location of electrons | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015365 | Bohrs research focused on | a. electrons, b. neutrons, c. protons, d. none of the above | a | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015368 | Which statement about energy levels is false? | a. They are located at fixed distances from the nucleus, b. They are the only places where electrons can be found, c. They have more energy when they are farther from the nucleus, d. There are only two of them | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015370 | Fireworks give off light energy when their electrons | a. flow to different atoms, b. jump to a lower energy level, c. produce electric current, d. change from matter to energy | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015371 | The focus of Bohrs research was the nucleus. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015372 | Energy levels farther from the nucleus have | a. less energy, b. more orbitals, c. a greater maximum number of electrons, d. two of the above | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015373 | Bohr rejected modern atomic theory. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015374 | How many orbitals are there at energy level 3? | a. 1, b. 4, c. 9, d. 16 | c | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015375 | Electrons bend around the nucleus instead of falling toward it because electrons behave like | a. protons, b. orbitals, c. clouds, d. waves | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015376 | There is a maximum of two energy levels in an atom. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015377 | Where would you not be likely to find electrons in an atom? | a. inside the nucleus, b. attached to the nucleus, c. between energy levels, d. all of the above | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015378 | Electrons fall toward the nucleus because they behave like waves. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015379 | Energy levels are located between the orbitals of atoms. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015380 | Energy level 1 has the most energy. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015381 | Electrons can move from one energy level to another. | a. true, b. false | a | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015382 | Scientists can now determine the exact location of any given electron. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015383 | Electrons are attracted to the nucleus because of the strong force. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015384 | Some regions of the electron cloud are denser than others. | a. true, b. false | a | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015385 | There is a maximum of two orbitals per energy level. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015386 | Fireworks give off light when their electrons split in two. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015387 | Since the 1920s, physicists have known that electrons travel in fixed paths. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015388 | Wavelike particles in the atom exist only where the wave is stable. | a. true, b. false | a | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015389 | All energy levels have the same maximum number of electrons. | a. true, b. false | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015390 | number of orbitals in the first energy level | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | g | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015391 | area surrounding the nucleus of an atom where electrons are likely to be | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | a | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015392 | scientist who thought that electrons orbit the nucleus like planets orbit the sun | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | c | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015393 | maximum number of electrons per orbital | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | f | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015394 | area located at a fixed distance from the nucleus of an atom where electrons can orbit the nucleus | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | b | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015395 | wavelike particles that move around the nucleus of an atom | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | e | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015396 | scientist who discovered energy levels | a. electron cloud, b. energy level, c. Rutherford, d. Bohr, e. electron, f. two, g. one | d | Lesson: modern atomic theory
Bohrs Model of the Atom:
Bohrs research focused on electrons. In 1913, he discovered evidence that the orbits of electrons are located at fixed distances from the nucleus. Remember, Rutherford thought that electrons orbit the nucleus at random. Figure 5.14 shows Bohrs model of the atom.
... |
NDQ_015398 | Mendeleev organized the elements based on their | a. atomic number, b. number of protons, c. atomic mass, d. number of neutrons | c | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015400 | In the modern periodic table, atomic number | a. increases from top to bottom within each period, b. increases from left to right within each group, c. is the same within each group but not between groups, d. none of the above | d | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015402 | The shortest period in the periodic table is period | a. 18, b. 7, c. 6, d. 1 | d | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015403 | All but one of the elements on the left side of the periodic table are | a. metalloids, b. liquids, c. metals, d. gases | c | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015406 | Which statement is true about any group in the periodic table? | a. It includes metals, metalloids, and nonmetals, b. It includes elements with similar properties, c. It includes gases, liquids, and solids, d. It contains 18 different elements | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015411 | number of protons in an atom | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | c | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015414 | row of the periodic table | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015416 | table based on the atomic number of elements | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | g | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015417 | Mendeleev left spaces in his periodic table for unknown elements. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015418 | how an element is represented in the periodic table | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | e | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015419 | The modern periodic table is the same as Mendeleevs table but with more elements. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015420 | table based on the atomic mass of elements | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | f | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015421 | column of the periodic table | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015422 | The modern periodic table has more than 100 elements. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015423 | amount of matter in an atom | a. group, b. period, c. atomic number, d. atomic mass, e. chemical symbol, f. Mendeleevs periodic table, g. modern periodic table | d | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015424 | Elements called actinides are in period 7 of the periodic table. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015425 | Elements in the same period of the periodic table have similar properties. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015426 | Mendeleev developed his periodic table in the 1860s. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015427 | Mendeleev named the columns of his table periods. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015428 | Elements within a group of the periodic table are identical to each other. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015429 | In Mendeleevs table, each period contains 18 elements. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015430 | Mendeleevs used his table to predict unknown elements. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015431 | The elements Mendeleev predicted were never discovered. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015432 | Lanthanide elements are placed in period 2 of the modern periodic table. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015433 | The chemical symbol for lead is Pb. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015434 | Most elements in the modern periodic table are metalloids. | a. true, b. false | b | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015435 | Krypton is a gaseous metal in group 18 of the periodic table. | a. true, b. false | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015436 | Scientist first started looking for a way to organize the elements in the | a. 1700s, b. late 1800s, c. early 1900s, d. 1980s | a | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015437 | How many groups are there in Mendeleevs periodic table? | a. 18, b. 16, c. 12, d. 8 | d | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015438 | Examples that illustrate the meaning of periodic include | a. phases of the moon, b. day and night, c. months of the year, d. all of the above | d | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015439 | How many elements are represented in the modern periodic table? | a. fewer than 50, b. exactly 18, c. about 65, d. more than 100 | d | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015440 | Which of the following could be the chemical symbol of an element? | a. SI, b. si, c. Si, d. iS | c | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015441 | Elements on the right side of the periodic table are | a. metals, b. metalloids, c. nonmetals, d. actinides | c | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015442 | Which sentence is true about periods of the periodic table? | a. All the periods are the same length, b. There are a total of 18 periods, c. Some periods are longer than others, d. two of the above | c | Lesson: how elements are organized
Mendeleevs Periodic Table of the Elements:
Mendeleev was a teacher as well as a chemist. He was writing a chemistry textbook and needed a way to organize the elements so it would be easier for students to learn about them. He made a set of cards of the elements, similar to a deck of ... |
NDQ_015443 | Most metals are | a. shiny, b. good conductors of heat, c. solids are room temperature, d. all of the above | d | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015444 | Most metals are | a. dull, b. brittle, c. ductile, d. all of the above | c | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015445 | If an element is ductile, this means that it can be | a. used as an insulator, b. pulled into long thin shapes, c. used to conduct electricity, d. crushed into a powder | b | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015446 | A nonmetal is an element that | a. exists only as a gas or liquid, b. is completely unreactive, c. cannot conduct electricity, d. is shiny and malleable | c | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015447 | Nonmetals tend to have properties that are | a. very similar to the properties of metals, b. in between those of metals and metalloids, c. more variable than the properties of metals, d. none of the above | c | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015448 | Which of the following elements is a metal? | a. phosphorus, b. selenium, c. lithium, d. boron | c | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015449 | Which statement about valence electrons is true? | a. They are located in the outer energy level of an atom, b. They are potentially involved in chemical reactions, c. They determine whether an element can conduct electricity, d. all of the above | d | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015450 | Solid nonmetals are | a. malleable, b. brittle, c. dull, d. two of the above | d | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015451 | Which of the following elements is a nonmetal? | a. sulfur, b. aluminum, c. silver, d. zinc | a | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015452 | If an element is malleable, this means that it can | a. be formed into long thin shapes like wires, b. be formed into thin sheets without breaking, c. be used to conduct electric current, d. be used as an electric insulator | b | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015454 | Which of the following elements is a metalloid? | a. copper, b. helium, c. phosphorus, d. germanium | d | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015455 | Which element has a completely filled outer energy level? | a. lithium, b. boron, c. fluorine, d. neon | d | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015457 | class of elements that do not conduct electricity | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | c | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015460 | word that describes most solid nonmetals | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | g | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015462 | smallest class of elements | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | b | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015463 | All metalloids are solids are room temperature. | a. true, b. false | a | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
NDQ_015464 | only nonmetal that is a liquid at room temperature | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | f | Lesson: classes of elements
Metals:
Metals are elements that are good conductors of electricity. They are the largest of the three classes of elements. In fact, most elements are metals. Look back at the modern periodic table (Figure 6.3) in this chapters lesson "How Elements Are Organized." Find the metals in the tab... |
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