| A | B |
|---|
| Valence Electrons | Electrons on the outer shell - determine reactivity |
| Element | Pure Substance made of 1 type of atom |
| Molecule | 2 or more atoms chemically combined |
| Synthesis Reaction | Elements / substances combine |
| Single Replacement | AB + C -> AC + B |
| Double Replacement | CP + AS -> CA + PS |
| Chemical Change | Changes the identity of a substance |
| Physical Change | No new substance formed |
| Law of Conservation of Mass | Mass can't be created or destroyed |
| Balanced Equation | Elements have = # of atoms in the reactant & the product |
| Reactants | Before the arrow in a chemical equation |
| Product | After the arrow in a chemical equation |
