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| the energy needed to start a chemical reaction |
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| the place where the substance binds to the enzyme |
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| When water sticks to other substances |
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| When water sticks to itself |
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| the smallest piece of a substance that still has the properties of that substance |
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| the number of protons in an element |
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| any substance that decreases H+ when dissolved in solution |
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| substance that react with excess acid or base to neutralize them and keep the pH constant |
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sugars and starch
the main source of energy for most living things |
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| controls the rate of a reaction by lowering the activation energy |
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| process that transforms one set of chemicals into another set of chemicals |
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| substance formed by chemical combinations(two or more) |
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| type of bond between atoms in which the electrons are shared |
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| genetic material that organisms inherit from their parents |
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| negatively charged particle; located in the space surrounding the nucleus |
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| pure substance that consists entirely of one type of atom |
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| protein catalyst that speeds up the rate of specific biological reactions |
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| lipid; made up of fatty acids and glycerol; insulates, protects internal organs, stores energy |
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| weak attraction between a hydrogen atom and another atom |
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| atom that has a positive or negative charge |
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| chemical bond formed when one or more electrons are transferred from one atom to another |
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| one of several forms of a single element, that contains the same number of protons |
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| macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes |
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| material composed of two or more elements or compounds that are physically mixed together but not chemically combined |
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| smallest unit of most compounds that displays all the properties of that compound |
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| small chemical unit that makes up a polymer |
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| macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus |
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| subunit of which nucleic acids are composed; made up of a sugar unit, phosphate group, and a nitrogenous base |
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| the center of an atom which contains the protons and neutrons |
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| scale with values from 0 to 14, used to measure the concentration of H+ ions in a solution |
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| molecules composed of many monomers; |
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| elements or compounds produced by a chemical reaction |
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| macromolecule that contains carbon, hydrogen, and nitrogen; needed by the body for growth and repair |
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| elements or compounds that enter into a chemical reaction |
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| substance that is dissolved in a solution |
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| type of mixture in which all the components are evenly distributed |
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| dissolving substance in a solution |
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| elements or compounds produced by a chemical reaction |
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| macromolecule that is made up of carbon,hydrogen,nitrogen, and oxygen; needed by the body for growth and repair |
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| elements or compounds that enter into a chemical reaction |
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| a substance that is dissolved into a liquid |
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| dissolving substance in a solution |
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| reactant of an enzyme-catalyzed reaction |
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| mixture of water and non-dissolved material |
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