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| the smallest unit of matter that cannot be broken down by chemical means |
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| is a substance made up of atoms that have the same number of protons |
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| Electrons in the outermost level, or shell |
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| is a substance made of the bonded atoms of two or more different elements |
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| is a group of atoms held together by covalent bonds |
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| is an atom or group of atoms that has an electric charge because it has gained or lost electrons |
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| is the attraction of particles of the same substance |
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| Attraction between particles of different substances |
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| is a mixture in which ions or molecules of one or more substances are evenly distributed in another substance |
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| are compounds that form extra hydronium ions when dissolved in water |
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| are compounds that form extra hydroxide ions when dissolved in water |
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| is a measure of how acidic or basic a solution is |
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| is a substance that reacts to prevent pH changes in a solution |
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| are molecules made of sugars |
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Definition
| are another class of biomolecules, which includes fats, phospholipids, steroids, and waxes |
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| is a molecule (usually a large one) made up of amino acids |
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| building blocks of protein |
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Definition
| is a long chain of nucleotide units |
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Definition
| is a molecule made up of three parts: a sugar, a base, and a phosphate group |
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Definition
| contain the sugar deoxyribose |
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| Cells need a steady supply of adenosine triphosphate to function |
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Definition
| ability to move or change matter |
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| is a substance that is changed in a chemical reaction |
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| is a new substance that is formed |
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| of the reaction is the minimum kinetic energy that colliding particles need to start a chemical reaction |
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| is a molecule that increases the speed of biochemical reactions |
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Definition
| the region where the reaction takes place |
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| shape of the active site determines which reactants |
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