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NDQ_015874 | An endothermic chemical reaction is a reaction that releases energy. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015875 | how fast a reaction occurs | a. activation energy, b. catalyst, c. concentration, d. endothermic, e. exothermic, f. reaction rate, g. chemical energy | f | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015876 | The general equation for an exothermic reaction is Reactants + Energy Products. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015877 | energy needed to start a reaction | a. activation energy, b. catalyst, c. concentration, d. endothermic, e. exothermic, f. reaction rate, g. chemical energy | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015878 | taking in heat | a. activation energy, b. catalyst, c. concentration, d. endothermic, e. exothermic, f. reaction rate, g. chemical energy | d | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015879 | Plants synthesize glucose in an endothermic chemical reaction. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015880 | number of particles of a substance in a given volume | a. activation energy, b. catalyst, c. concentration, d. endothermic, e. exothermic, f. reaction rate, g. chemical energy | c | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015881 | The law of conservation of energy does not apply to chemical reactions. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015882 | Any factor that helps reactants come together lowers the activation energy. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015890 | All chemical reactions involve energy. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015891 | One of the most important endothermic reactions is photosynthesis. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015892 | In an exothermic reaction, it takes more energy to break bonds in reactants than is released when bonds | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015893 | Combustion is an example of an endothermic reaction. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015894 | There is no overall change in the amount of energy in chemical reactions. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015895 | Only endothermic reactions need energy to get started. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015896 | Energy is absorbed in exothermic reactions. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015897 | An increase in temperature is a sign of an exothermic reaction. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015898 | Products have less stored chemical energy than reactants in an endothermic reaction. | a. true, b. false | b | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015899 | Catalysts in living things are called enzymes. | a. true, b. false | a | Lesson: chemical reactions and energy
Endothermic Reactions:
In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. The word "endothermic" literally means "taking in heat." A constant input of energy, often in the form of heat, is needed i... |
NDQ_015900 | Cellulose is | a. one of the most common compounds on Earth, b. made by the cells of plants and animals, c. a monomer of carbon, d. all of the above | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015901 | How many more valence electrons does carbon need to fill its outer energy level? | a. 1, b. 2, c. 3, d. 4 | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015902 | Which type(s) of bonds can a carbon atom form with other carbon atoms? | a. single bonds, b. double bonds, c. triple bonds, d. all of the above | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015903 | How many bonds can each carbon atom form? | a. 1, b. 2, c. 3, d. 4 | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015904 | Forms of pure carbon include | a. methane, b. cellulose, c. diamond, d. two of the above | c | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015905 | The plastic called polythene consists of | a. repeating monomers of ethene, b. only carbon and hydrogen atoms, c. many fullerenes joined by covalent bonds, d. two of the above | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015906 | Forms of crystalline carbon include | a. cotton, b. graphite, c. charcoal, d. methane | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015907 | One of the most common naturally occurring compounds on Earth is | a. graphite, b. fullerene, c. cellulose, d. polythene | c | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015908 | The monomers in a polymer may be | a. all the same, b. different from one another, c. joined by metallic bonds, d. two of the above | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015909 | Which statement about carbon is false? | a. It has four valence electrons, b. It forms covalent bonds with other nonmetals, c. It is found in the majority of known compounds, d. It rarely forms large compounds called polymers | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015910 | All carbon polymers are | a. naturally occurring, b. produced in labs, c. found in plastics, d. large molecules | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015913 | large molecule that consists of many smaller molecules joined together by covalent bonds | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015914 | form of carbon in which carbon atoms are arranged in layers | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | f | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015917 | one of the simplest carbon compounds | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | e | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015919 | form of carbon that it is the hardest natural substance | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | d | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015920 | Carbon is a nonmetal in group 12 of the periodic table. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015921 | small molecule joined with other small molecules by covalent bonds to form a much larger molecule | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015922 | A structural formula uses dots to represent electrons. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015923 | form of carbon in which carbon atoms are arranged in hollow spheres | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | g | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015924 | All carbon polymers are made in labs or factories. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015925 | carbon compound found only in plants | a. monomer, b. polymer, c. cellulose, d. diamond, e. methane, f. graphite, g. fullerene | c | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015927 | Graphite is used as a lubricant because it is slippery. | a. true, b. false | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015928 | Each molecule of methane contains four atoms of carbon. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015935 | The chief component of cellulose is carbon. | a. true, b. false | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015936 | Carbon forms more compounds than any other element. | a. true, b. false | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015937 | Carbon can form bonds with any other element except itself. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015938 | The carbon compound with the formula CH4 is polyethylene. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015939 | In a triple bond, two atoms share three valence electrons. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015940 | Plastics are examples of synthetic carbon polymers. | a. true, b. false | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015941 | All forms of crystalline carbon have the same structure. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015942 | Carbon can combine only with hydrogen and oxygen. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015943 | Carbon forms ionic bonds with other nonmetals. | a. true, b. false | b | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015944 | There are millions of known carbon compounds. | a. true, b. false | a | Lesson: properties of carbon
Valence Electrons and Bonding in Carbon:
Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 compounds, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence elect... |
NDQ_015945 | Which statement about hydrocarbons is true? | a. They are the most complex type of carbon compounds, b. They are all gases at room temperature, c. They generally do not dissolve in water, d. none of the above | c | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015946 | Which statement about hydrocarbons is false? | a. All of them are polar compounds, b. Most of them are obtained from fossil fuels, c. Some of them are solids at room temperature, d. They are the simplest type of carbon compounds | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015947 | The simplest hydrocarbons are | a. unsaturated hydrocarbons, b. saturated hydrocarbons, c. aromatic hydrocarbons, d. alkenes and alkynes | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015948 | The last part of the name of a hydrocarbon compound indicates | a. the number of bonds between carbon atoms, b. the number of carbon atoms per molecule, c. the shape of the hydrocarbon compound, d. none of the above | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015949 | The first part of the name of a hydrocarbon indicates the number of | a. bonds between carbon atoms, b. branches in the molecule, c. hydrogen atoms, d. carbon atoms | d | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015950 | Hydrocarbons are used in floor wax because they | a. resist scratches, b. tend to repel water, c. dissolve well in water, d. have high melting points | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015951 | Which of the following is an example of an unsaturated hydrocarbon? | a. methene, b. pentane, c. propane, d. ethene | d | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015952 | Alkanes with more carbon atoms generally have | a. higher boiling points, b. lower boiling points, c. higher melting points, d. two of the above | d | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015953 | Aromatic hydrocarbons generally have | a. a strong scent, b. rings of four carbon atoms, c. alternating double and triple bonds, d. all of the above | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015954 | Dead organisms in ancient seas gradually formed deposits of | a. coal, b. petroleum, c. natural gas, d. two of the above | d | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015956 | Hydrocarbon compounds that are burned for fuels include | a. coal, b. propane, c. kerosene, d. all of the above | d | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015957 | Fossil fuels include | a. wood, b. charcoal, c. petroleum, d. all of the above | c | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015959 | All hydrocarbons are small chemical compounds. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015962 | Hydrocarbons are generally nonpolar compounds. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015964 | Isomers of a given compound always have the same properties. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015965 | Hydrocarbons are compounds that contain only carbon and hydrogen. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015966 | Heptane is an unsaturated hydrocarbon. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015967 | The simplest hydrocarbons are the aromatic hydrocarbons. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015968 | Butane has branched-chain molecules. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015969 | The size of hydrocarbon molecules influences their properties. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015970 | Butane and iso-butane differ in their number of hydrogen atoms. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015971 | Any hydrocarbon ending in ane has only straight-chain molecules. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015972 | Alkenes may form straight or branchedchains but not rings. | a. true, b. false | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015973 | Hydrocarbons are used to make synthetic fabrics such as polyester. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015974 | The physical properties of alkenes are generally similar to those of alkanes. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015975 | Alkynes are relatively rare in nature. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015976 | Fossil fuels formed over millions of years from dead organisms. | a. true, b. false | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015977 | Ring-shaped unsaturated hydrocarbons | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | f | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015978 | all compounds that consist only of carbon and hydrogen | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | d | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015979 | unsaturated hydrocarbons with at least one double bond | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | b | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015980 | ring-shaped saturated hydrocarbons | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | g | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015981 | saturated hydrocarbons such as ethane | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | a | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015982 | molecules with the same atoms but different shapes | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | e | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015983 | unsaturated hydrocarbons with at least one triple bond | a. alkanes, b. alkenes, c. alkynes, d. hydrocarbons, e. isomers, f. aromatic hydrocarbons, g. cycloalkanes | c | Lesson: hydrocarbons
What Are Hydrocarbons:
Hydrocarbons are compounds that contain only carbon and hydrogen. Hydrocarbons are the simplest type of carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. ... |
NDQ_015992 | Classes of biochemical compounds include all of the following except | a. lipids, b. proteins, c. phosphates, d. nucleic acids | c | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_015994 | Living things use lipids for | a. energy, b. enzymes, c. cell membranes, d. two of the above | d | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_015996 | Functions of proteins include | a. coding genetic information, b. storing energy in animals, c. regulating life processes, d. making up cell walls | c | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_015997 | Which statement about RNA is true? | a. It has a double helix shape, b. It consists of two chains of nucleotides, c. It is needed for the synthesis of proteins, d. It contains the nitrogen base called thymine | c | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016000 | A nucleotide consists of a | a. phosphate group, b. nitrogen base, c. sugar, d. all of the above | d | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016005 | All biochemical compounds contain hydrogen. | a. true, b. false | a | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016008 | There are a total of 20 different biochemical compounds. | a. true, b. false | b | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016010 | Some nucleic acids are hormones that regulate life processes. | a. true, b. false | b | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016011 | Biochemical compounds are carbon-based compounds found in living things. | a. true, b. false | a | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016012 | The simplest sugar is named sucrose. | a. true, b. false | b | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016013 | The main function of simple carbohydrates is to store energy in animals. | a. true, b. false | b | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016014 | Bread is a good source of starch in the diet. | a. true, b. false | a | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016015 | We need oils to help move food wastes through the digestive tract. | a. true, b. false | b | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
NDQ_016016 | The only biochemical compounds that contains sulfur are nucleic acids. | a. true, b. false | b | Lesson: carbon and living things
Biochemical Compounds:
A biochemical compound is any carbon-based compound found in living things. Like hydrocarbons, all biochemi- cal compounds contain hydrogen as well as carbon. However, biochemical compounds also contain other elements, such as oxygen and nitrogen. Almost all bioc... |
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