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Chem Mod 3
Apologia Chemistry Module 3
| Question | Answer |
|---|---|
| Law of Mass Conservation | Matter cannot be created or destroyed; it can only change form |
| Qualitative measurement | A measurement that doesn't need to be exact |
| Quantitative measurement | A measurement that needs to be as exact as possible |
| Element | Any substance that cannot be decomposed into less massive substances |
| Compounds | Substances that can be decomposed into elements by chemical means |
| Law of Definite Proportions | The proportion of elements in any compound is always the same |
| 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 |
| Dalton's Atomic Theory - point | 1 |
| Dalton's Atomic Theory - point | 2 |
| Dalton's Atomic Theory - point | 3 |
| Dalton's Atomic Theory - point | 4 |
| Ionic compounds contain ... | ... at least one metal atom and at least one nonmetal atom |
| Ionic compounds ... | ... conduct electricity when dissolved in water |
| Covalent compounds contain .... | ... only nonmetal atoms |
| Covalent compounds ... | ... do NOT conduct electricity when dissolved in water |
| Naming ionic compounds | 1. Start with the name of the first atom in the molecule 2. Take the next atom and replace its ending with an "ide" |
| Naming covalent compounds | Use prefixes in front of the name of each atom in the compound, omitting any "mono" from the first atom |
| Mono | One |
| Di | Two |
| Tri | Three |
| Tetra | Four |
| Penta | Five |
| Hexa | Six |
| Hepta | Seven |
| Octa | Eight |
| Nona | Nine |
| Deca | Ten |
| Hydrogen | H |
| Helium | He |
| Lithium | Li |
| Beryllium | Be |
| Boron | B |
| Carbon | C |
| Nitrogen | N |
| Oxygen | O |
| Fluorine | F |
| Neon | Ne |
| Sodium | Na |
| Magnesium | Mg |
| Aluminum | Al |
| Silicon | Si |
| Phosphorus | P |
| Sulfur | S |
| Chlorine | Cl |
| Argon | Ar |
| Potassium | K |
| Calcium | Ca |