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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 |