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AP Chem ch.1 zaske
| Question | Answer |
|---|---|
| Matter | Physical material of the universe |
| Atoms | The most infinitely small building blocks of matter |
| Molecules | Two or more atoms joined together |
| States of matter | Gas liquid solid |
| Gas | No fixed volume or shape |
| Liquid | Distinct volume no fixed shape |
| Solid | Fixed volume fixed shape |
| Pure substance | doesn't vary from sample to sample, same makeup every time |
| Elements | Substances that can not decomposed into simpler pieces |
| Compounds | Composed of two or more elements |
| Mixtures | Combination of two or more substances with each substance retaining its own chemical identity |
| Law of definite proportions | Elemental composition of compound is always the same |
| Solutions | Homogenous mixtures |
| Physical properties | Doesn't change identity ex color density melting point boiling point hardness |
| Chemical properties | Describes the way a substance may change or react ex flammability |
| Intensive | Do not depend on amount sampled |
| Extensive | Depends on the amount of sample ex mass volume |
| giga | 10^9 |
| Mega | 10^6 |
| Kilo | 10^3 |
| Deci | 10^-1 |
| Centi | 10^-2 |
| Milli | 10^-3 |
| Micro | 10^-6 |
| Nano | 10^-9 |
| Density is | Mass/volume |
| Celsius to Fahrenheit | C°= 5/9 (°F - 32) |
| Fahrenheit to Celsius | °F= 9/5(°C) + 32 |
| Kelvin to Celsius | K = °C + 273.15 |
| Sig figs with decimal | Go from the left |
| Sig fig with no decimal | Go from the right |