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Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
1.What is absolute zero?   a state when atoms are in the lowest possible energy state.  
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2.What is accuracy?   refers to how close a measured value is an accepted value.  
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3.What is acid-base indicator?   Chemical dye whose color is affected by acidic and basic solutions.  
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4.What is an actinide series?   In the periodic table, the f-block elements from period 7 that follow the element actinium.  
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5.What is an active site?   The pocket or crevice to which a substance binds in an enzyme-catalyzed reaction.  
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6.What is alcohol?   An organic compound in which a hydroxyl group replaces a hydrogen atom of a hydrocarbon.  
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7.What is an alloy?   A mixture of elements that have metallic properties.  
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8.What is alpha radiation?   Radiation that is made up of alpha particles.  
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9.What is an amino acid?   an organic molecule that has both an amino group and a carboxyl group.  
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10.What is an atomic number?   The amount of protons in an atom.  
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11.What is an atomic mass unit?   One-twelfth the mass of a carbon-12 atom.  
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12.What is atomic mass?   The weighed average mass of the isotopes of that element.  
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13.What is atmosphere?   The unit that is often used to report air pressure.  
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14.What is an anion?   An ion that has a negative charge.  
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What is an anode?15.   In an electrochemical cell, the electrode where oxidation takes place.  
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16.What is a barometer?   An instrument that is used to measure atmospheric pressure.  
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17.What is a buffer?   A solution that resists changes in pH when limited amounts of acid or bases are added.  
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18.What is a derived unit?   A unit derived by a combination of base units.  
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19.What is a dry cell?   An electrochemical cell that contains a moist electrolytic paste inside a zinc shell.  
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20.What is an enzyme?   A biological catalyst.  
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