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37 Cards in this Set
- Front
- Back
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Law of Conservation of Mass |
mass can not be created or destroyed |
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Matter |
anything that has mass and takes up space |
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Solid |
definite shape definite volume |
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Liquid |
definite volume indefinite shape |
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Gas |
indefinite shape indefinite volume |
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Sublimation |
when a solid goes directly to a gas |
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Melting |
when a solid goes to a liquid |
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Vaporization |
when a liquid goes to a gas |
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Condensation |
when a gas goes to a liquid
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Freezing |
when a liquid goes to a solid |
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Absolute Zero |
0 degrees Kelvin |
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Temperature |
average kinetic energy measured in Celsius & Kelvin |
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Celsius |
water freezes at 0 and boils at 100 |
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Converting Celsius to Kelvin |
Celsius plus 273 |
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Element |
a pure substance that can not be broken down |
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Compound |
2 or more substances that are chemically combined, can be broken down |
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Mixture |
2 or more substances that are physically combined |
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Homogeneous Mixture |
a mixture that is uniform throughout |
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Heterogeneous Mixture |
a mixture that is not uniform throughout |
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Distillation |
a technique used to separate liquids based on their boiling points |
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Filtration |
a technique used to separate a liquid from a solid |
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Physical Property |
the appearance of a substance |
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Pure Substance |
exist in fixed proportions; elements or compounds |
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Chemical Change |
A type of change where new substances are formed; Examples are to burn, rot, decompose, corrode |
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4 Signs of a Chemical Change |
1 color change, 2 gas produced, 3 energy transfer, 4 precipitate forms |
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Physical Change |
a change where no new substances are formed; Examples are to boil, freeze, cut, split, grind |
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Precipitate |
a sign of a chemical change where a solid forms and settles out of a liquid mixture |
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Reactant |
what you start a reaction with |
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Product |
what you end a reaction with |
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Deposition |
when a gas goes directly to a solid
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Density |
Mass divided by volume, g/mL or g/cm3 |
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Mole |
the amount of a substance that contains 6.02 x 10^23 representative particles, a unit of measurement |
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Gram Formula Mass |
the sum total of all the masses of elements in a compound, water is 18.0 g/mol |
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Exothermic |
release of energy, feels warm to the touch |
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Endothermic |
energy being absorbed, feels cold to the touch |
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Diatomic Element |
A molecule of an element consisting of two atoms. Hydrogen H2, Nitrogen N2,Fluorine F2, Oxygen O2, Iodine I2 Chlorine Cl2, and Bromine Br2. Ways to remember them are: Have No Fear Of Ice Cold Beer |
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Heat |
the total kinetic and potential energy within an object. measured in Joules |
