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NDQ_015465 | Nonmetals are the second largest class of elements. | 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_015466 | word that describes most metals | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | e | 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_015467 | only metal that is a liquid at room temperature | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | 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_015468 | Elements with eight valence electron are unreactive. | 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_015469 | class of elements that conduct electricity | a. metals, b. metalloids, c. nonmetals, d. mercury, e. ductile, f. bromine, g. brittle | 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_015470 | Fluorine is an example of a metalloid. | a. true, b. false | 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_015471 | Nonmetals tend to give up electrons. | a. true, b. false | 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_015479 | Metals have relatively high melting points. | 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_015480 | Carbon is an example of a metalloid. | a. true, b. false | 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_015481 | Almost all nonmetals are solids are room temperature. | a. true, b. false | 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_015482 | Some nonmetals are semiconductors. | a. true, b. false | 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_015483 | Silicon is the most common metalloid on Earth. | 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_015484 | Metals generally have fewer valence electrons than nonmetals. | 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_015485 | The number of valence electrons determines an elements reactivity. | 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_015486 | Elements that want to gain electrons are usually metals. | a. true, b. false | 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_015487 | The ability of an element to conduct electricity depends on its number of neutrons. | a. true, b. false | 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_015488 | Neon is more reactive than fluorine. | a. true, b. false | 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_015489 | column of elements in the periodic table | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | f | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015490 | Hydrogen is in the same group as the alkali metals because | a. it is a metal, b. it is unreactive, c. it has one valence electron, d. it is in period 1 of the periodic table | c | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015491 | element in group 18 of the periodic table | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | d | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015492 | Alkaline Earth metals are less reactive than | a. noble gases, b. transition metals, c. alkali metals, d. all of the above | c | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015493 | metal in group 1 of the periodic table | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015494 | Which groups of the periodic table contain one or more metalloids? | a. groups 12, b. groups 312, c. groups 1316, d. groups 1718 | c | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015495 | The most reactive nonmetals are elements in the | a. boron group, b. nitrogen group, c. oxygen group, d. halogen group | d | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015496 | radioactive transition metal | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | g | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015497 | metal in group 2 of the periodic table | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015498 | All elements in the carbon group | a. are solids are room temperature, b. have four valence electrons, c. are not very reactive, d. all of the above | d | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015500 | metal in group 3 of the periodic table | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | e | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015501 | nonmetal in group 17 of the periodic table | a. alkali metal, b. alkaline Earth metal, c. halogen, d. noble gas, e. transition metal, f. group, g. actinide | c | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015503 | Elements in group 1 include | a. hydrogen, b. alkali metals, c. alkaline Earth metals, d. two of the above | d | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015506 | Alkali metals are | a. soft, b. high in density, c. not very reactive, d. all of the above | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015508 | Which statement about alkaline Earth metals is true? | a. They are more reactive than alkali metals, b. They are always found combined with other elements, c. Some of them are liquids at room temperature, d. They are all gold in color | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015509 | The most reactive metals are the transition metals. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015510 | Transition metals tend to | a. be shiny, b. boil at low temperatures, c. be very soft, d. be extremely reactive | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015511 | Alkaline Earth metals have three valence electrons. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015512 | The only nonmetal in the carbon group is | a. nitrogen, b. boron, c. carbon, d. oxygen | c | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015513 | Halogens form salts when they combine with | a. alkali metals, b. alkaline Earth metals, c. transition metals, d. all metals | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015514 | Mercury is the only metal that is a liquid at room temperature. | a. true, b. false | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015515 | Nobles gases are | a. colorless, b. odorless, c. reactive, d. two of the above | d | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015516 | Boron is an example of an element in the metalloids class. | a. true, b. false | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015517 | Helium is an element in the group called the halogens. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015518 | Hydrogen is an alkali metal. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015519 | Alkali metals are found only in compounds. | a. true, b. false | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015520 | Some alkali metals can float on water. | a. true, b. false | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015521 | Calcium is an alkali metal. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015522 | There is just one group of transition metals. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015523 | Many of the actinides do not occur in nature. | a. true, b. false | a | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015524 | Elements in the oxygen group have eight valence electrons. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015525 | Selenium is an alkaline Earth metal. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015526 | The halogen group includes only gases. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015527 | Noble gases are found only in combination with other elements. | a. true, b. false | b | Lesson: groups of elements
Group 1 Hydrogen and Alkali Metals:
All the elements in group 1 have just one valence electron, so they are highly reactive. Group 1 is shown in Figure element in the universe. All the other elements in group 1 are alkali metals. They are the most reactive of all metals, and along with the e... |
NDQ_015535 | Subscripts in a chemical formula are used to show the number of | a. molecules in a substance, b. atoms of each element in a compound, c. different elements in a compound, d. protons in an element | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015536 | There are millions of unique substances in the universe because elements can combine in many different ways to form | a. mixtures, b. solutions, c. compounds, d. ions | c | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015537 | Which chemical formula represents the compound hydrogen peroxide? | a. H2 O, b. HO2, c. H2 O 2, d. H2 O 3 | c | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015538 | Water is an example of a(n) | a. unique substance, b. chemical compound, c. covalent compound, d. all of the above | d | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015539 | The chemical formula HCl represents the compound named | a. hydrogen chloride, b. hydrogen carbide, c. methane, d. none of the above | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015540 | Which statement is true about water and hydrogen peroxide? | a. Both substances have the same properties, b. Both substances have the same chemical formula, c. Both substances consist of hydrogen and oxygen, d. Both substances are mixtures of elements | c | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015541 | Chemical bonds always involve | a. ions, b. atoms, c. metals, d. electrons | d | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015542 | Which statement is true about carbon dioxide and carbon monoxide? | a. Both compounds consist of carbon and oxygen, b. Both compounds have all the same properties, c. Both compounds are harmless gases, d. all of the above | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015543 | How many valence electrons does an oxygen atom have? | a. 2, b. 4, c. 6, d. 8 | c | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015544 | The ratio of elements in a given compound | a. is always 2 to 1, b. is always the same, c. may vary, d. two of the above | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015546 | A given compound always has the same | a. chemical formul, b. composition, c. volume, d. two of the above | d | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015547 | When there is just one atom of an element in a molecule, what subscript is used for the element? | a. 1, b. 0, c. 2, d. No subscript is use | d | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015555 | An oxygen atom has eight valence electrons. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015557 | A molecule of carbon monoxide has two carbon atoms and one oxygen atom. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015560 | The types of bonds in chemical compounds determine many of their properties. | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015562 | The same elements may form different compounds. | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015563 | The chemical formula for carbon dioxide is CO2 . | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015564 | A hydrogen atom has two electrons. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015565 | Each element is represented by a unique chemical formula. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015566 | The compound carbon dioxide has twice as many oxygen atoms as carbon atoms. | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015567 | The same elements may combine in different ratios to form the same compound. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015568 | Any molecule that contains only hydrogen and oxygen is water. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015569 | Different types of compounds differ in the types of bonds that hold their atoms together. | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015570 | Both coal and diamond consist of atoms of carbon that are bonded together. | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015571 | Most of the unique substances on Earth are compounds. | a. true, b. false | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015572 | When atoms combine chemically they form mixtures. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015573 | A chemical bond consists of matter that connects two different atoms. | a. true, b. false | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015574 | pure substance that cannot be separated into any other substances | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | e | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015575 | unique substance that forms when elements combine chemically | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | c | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015576 | particle of a compound that forms when atoms bond together | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | f | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015577 | one of three types of chemical compounds | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | g | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015578 | symbol representing a chemical compound | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | b | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015579 | particle in the outer energy level of an atom | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | d | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015580 | force of attraction between atoms or ions that share or transfer electrons | a. chemical bond, b. chemical formula, c. compound, d. valence electron, e. element, f. molecule, g. ionic | a | Lesson: introduction to chemical bonds
Chemical Bonding:
Elements form compounds when they combine chemically. Their atoms join together to form molecules, crystals, or other structures. The atoms are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions. It occurs when atoms ... |
NDQ_015581 | Ionic compounds form when ions share electrons. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015582 | When halogens form ions they | a. become positive in charge, b. become negative in charge, c. gain two electrons, d. two of the above | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015583 | In sodium chloride, sodium loses an electron to chlorine. | a. true, b. false | a | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015584 | Which two elements would not form ionic bonds? | a. calcium and lithium, b. calcium and oxygen, c. lithium and oxygen, d. calcium and carbon | a | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015585 | Ionic bonds form only between atoms of nonmetals. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015586 | Energy is released when | a. valence electrons are removed from an atom, b. valence electrons are gained by an atom, c. a positive ion forms, d. two of the above | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015587 | A sodium ion has a charge of | a. -1, b. -2, c. +1, d. +2 | c | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015588 | The amount of energy needed to form an ion depends only on the number of valence electrons. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015589 | Francium has the same number of valence electrons as lithium. | a. true, b. false | a | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015590 | In a given metals group of the periodic table, compared with elements closer to the top of the table, elements closer to the bottom | a. have valence electrons that are farther from the nucleus, b. have valence electrons that are harder to remove from the atom, c. need more energy to form positive ions, d. all of the above | a | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015592 | Alkali metals release the most energy when they become ions. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015593 | Salt consists of molecules of sodium and chloride ions. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015595 | When an atom of iodine becomes an ion, it is named iodide. | a. true, b. false | a | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015598 | Ionic compounds are usually liquids at room temperature. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
NDQ_015600 | Water is an example of an ionic compound. | a. true, b. false | b | Lesson: ionic bonds
Formation of Ionic Bonds:
An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure 7.3 shows how this happens. In row 1 of Figure 7.3, an atom of sodium donates an e... |
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