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| Negatively charged particle: located outside the atomic nucleus. |
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| Substance consisting entirely of one type of atom. |
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| Atom of an element that has a number of neutrons different from that of other atoms of the same element. |
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| Substance formed by the chemical combination of two or more elements in definite proportions. |
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| Bond Bond formed when one or more electrons are transferred from one atom to another. |
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| Atoms that has a positive or negative charge. |
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| Bond forms when electrons are shared between atoms. |
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| Smallest unit of most compounds. |
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| A slight attraction that develops between the oppositely charged regions of nearby molecules. |
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| Attraction between molecules of the same substance. |
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| Attraction between molecules of different substances: In plants, attraction between unlike molecules. |
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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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| Mixture of two or more substances in which the molecules of the substances are evenly distributed. |
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| Substance that is dissolved in a solvent to make a solution. (Table salt is the solute in saltwater) |
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| Substance in which a solute is dissolved to form a solution. (ex. Water) |
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| Mixture of water and nondissolved materials. |
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| Measurement system used to indicate the concentration of hydrogen ions in solution |
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| Any compound that forms H+ ions in solution. |
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| A compound that produces hydroxide ions in solution. |
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| Weak acids or bases that can rect with strong acids or bases to prevent sharp,sudden changes in pH. |
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| Small unit that can join together with other small units to form polymers |
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| Large compound formed from combinations of many monomers. |
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| Compound made up of carbon, hydrogen, and oxygen atoms: major source of energy for the human body. |
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| Large macromolecule formed from monocaccharides. |
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| Macromolecule made mainly from carbon and hydrogen atoms: includes fats, oils, and waxes. |
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| Macromolecule containign hydrogen, oxygen, nitrogen, carbon, and phosphours. |
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| Monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base. |
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| Single-stranded nucleic acid that contains the sugar ribose. |
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| Deoxyribonucleic acid (DNA) |
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| Nucleic acid that contains the sugar deoxyribose. |
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| Macromolecules that contain nitrogen as well as carbon, hydrogen, and oxygen. Needed by the body for growth and repair and to make up enzymes. |
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| Compound with an amino group (NH2) on one end and a carboxyl group (-COOH) on the other end. |
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| Process that changes one set of chemicals into another set of chemicals. |
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| Element or compound that enters into a chemical reaction. |
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| Element or compound produced by a chemical reaction. |
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| Energy needed to get a reaction started. |
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| Substance that speeds up the rate of a chemical reaction. |
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| Proteins that act as biological catalysts. |
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| Reactant of an enzyme-catalyzed reaction. |
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