| A | B |
|---|
| The Law of Mass Conservation | Matter cannot be created or destroyed; it can only change forms |
| Element | Any substance that cannot be decomposed into less massive substances |
| H stands for | hydrogen |
| He stands for | helium |
| Li stands for | lithium |
| Be stands for | beryllium |
| B stands for | boron |
| C stands for | carbon |
| N stands for | nitrogen |
| O stands for | oxygen |
| F stands for | fluorine |
| Ne stands for | neon |
| Na stands for | sodium |
| Mg stands for | magnesium |
| Al stands for | aluminum |
| Si stands for | silocon |
| P stands for | phospohorous |
| S stands for | sulfur |
| Cl stands for | chlorine |
| Ar stands for | argon |
| K stands for | potassium |
| Ca stands for | calcium |
| Compounds | Substances that can be decomposed into elements by chemical means |
| The Law of Definite Proportions | The proportion of elements in any compound is always the same |
| The Law of Multiple Proportions | If two elements combine to form different compounds, the ratio of masses of the SECOND element that react with a fixed mass of the FIRST element will be a simple, whole-number ratio |
| The two rules for classifying chemical compounds | 1. If a compound contains at least one metal atom and at least one nonmetal atom, the compound is ionic. 2. If the compound is made up of solely nonmetal atoms, the compound is covalent. |
| To name and ionic compound: | 1. Start with the name of the first atom in the molecule. 2. Take the next atom in the molecule and replace its ending with and "ide" suffix. 3. Putting those two names together gives you the compound's name. |
| mono | one |
| di | two |
| tri | three |
| tetra | four |
| penta | five |
| hexa | six |
| hepta | seven |
| octa | eight |
| nona | nine |
| deca | ten |
| In naming an ionic compound | No prefix |
| In naming a covalent compound | Use a prefix |
| Physical characteristics of metal | Is malleable, has luster, conducts electricity |
