| A | B |
|---|
| compounds | two or more elements combined chemically |
| pure substances | substances with only one kind of particle |
| elements in nature | usually found as part of compounds |
| molecule | smallest part of compounds |
| kinds of pure substances | elements and compounds |
| atoms | smallest part of atoms |
| compound examples | sugar, salt, water, vinegar, carbon dioxide |
| physical properties | melting point, density, color, & more |
| chemical properties | reactivity, flammability, reacting to acids & light |
| electrolysis | using electricity to break chemical bonds |
| aluminum | found in aluminum oxide (bauxite) |
| ammonia | nitrogen & hydrogen combine to form fertilizer |
| proteins | found in all living things |
| nitrogen | one of the elements needed to make proteins |
| animal cells | use and are made up of proteins |
| carbohydrates | give plants and animals ENERGY |
| ore | a rock that contains metal |
| chemical changes | produce something NEW & DIFFERENT |
| physical changes | changes the looks but NOT the identity |
