| A | B |
| atom | In greek it means unable to cut |
| nucleus | center of the atom |
| chemical | type of reaction involving a chemical change |
| ionic | bonding that involves a transfer of electrons |
| proton | positively charged atomic particle |
| molecule | combination of atoms that forms a separate unit |
| compound | two or more atoms combined in definite proportions |
| solvent | substance doing the dissolving in a solution |
| hydrolysis | term that means water splitting |
| macromolecule | term for a large polymer |
| disaccharide | double sugar |
| carbohydrate | molecule that contains, carbon, hydrogen, and oxygen atoms |
| lipid | waxy or oily organic compound |
| DNA | nucleic acid |
| 20 | how many amino acids in our bodies |
| cellulose | structural sugar in plants |
| steroids | one type of lipids |
| 4 | how many bonds carbon can make |
| nitrogen | one of the main molecules in living organisms |
| H2O | example of a polar covalent bond |