Term
| What are the elements that make up living things? |
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Definition
Hydrogen
Oxygen
Carbon
Nitrogen |
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Definition
| smallest basic unti of matter |
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Definition
| 2 or more atoms held together by covalent bonds |
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| atom that has gained or lost one or more electrons |
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Definition
| substance made of atoms of different that are bonded together in a particular ratio. |
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| chemical bond formed when 2 atoms share one or more pair of electrons |
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| chemical bond formed through the electrical force between oppositely charged ions |
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| attraction between a slightly positive hydrogen atom and slightly negative atom |
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| chemical reaction that yields a net release of energry in the form of heat |
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| chemical reaction that requires a net input of energy |
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| energy input necessary to initiate a chemical reaction |
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| mixture that is consistent throughout; also called a homogeneous mixture |
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| a substance in which a solute dissolves and is present in greater concentration in a solution |
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| substance that dissolves in a solvent and is present a lower concentration than the solvent |
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| substance that decreases activation energy and increases reaction rate in a chemical reaction |
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| protein that catalyzes chemical reactions for organisms |
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| attraction between molecules of the same substance |
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| attraction between molecules of different substances |
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Definition
| molecue that makes up protein; composed of carbon, nitrogen, oxygen, and hydrogen and sometimes sulfur |
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