| A | B |
| compound | substance made up of two or more elements chemically combined |
| molecule | smallest part of a compound that has all the properties of that compound |
| mixture | two or more substances that have been combined, but not chemically changed |
| crystal lattice | ions arranged in a regular pattern |
| ion | charged particle; atoms that have gained or lost electrons |
| ionic bond | bond formed when atoms lose or gain electrons |
| covalent bond | bond formed when atoms chare electrons |
| organic chemistry | study of organic compounds |
| organic compound | compound containing carbon |
| structural formula | molecular model of an organic compound |
| amino acids | building blocks of proteins |
| carbohydrates | sugars and starches |
| lipids | fats and oils |
| proteins | compounds needed to build and repair the body |