CHEMISTRY, WATER & ORGANIC COMPOUNDS TEST REVIEW
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23 terms
Terms | Definitions |
|---|---|
 chemistry | study of matter |
| matter | anything that has mass and takes up space |
| atoms | building blocks of matter |
| particles in the center of an atom | protons and neutrons |
| element | pure substance that cannot be broken down into other substances by physical or chemical means |
| compound | pure substance formed when 2 or more different elements are combine |
| chemical bond | form that holds substances together |
| a partially- filled energy level is (stable/not as stable) as an energy level that is empty | not as stable |
| covalent bond | bond when electrons are shared |
| molecule | compounds in which the atoms are held together by covalent |
| ion | atoms that have lost or gained electrons |
| ionic bond | attraction between atoms |
| chemical reaction | atoms reorganized; bonds reform |
| catalyst | lowers activation energy |
| mixture | retains individual characteristics |
| carbohydrate | energy |
| lipid | fats, oil, waxes |
| protein | made up of amino acids joined by peptide bonds |
| nucleic acids | transmit genetic info; DNA and RNA |
| ATP | storehouse of energy |
| organic compound | carbon |
| PH | measure of H+IN solution |
| activation energy | minimum amount of energy needed for reactants to form products in a chemical reaction |
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