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23 Cards in this Set
- Front
- Back
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Solid |
Definite shape and volume |
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Liquid |
Definite volume, not shape |
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Gas |
No definite shape or volume |
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Viscosity |
A liquids resistance to flow |
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Surface tension |
Force acting on the particles at the surface of a liquid |
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Physical Property |
Can be observed without changing the chemical make-up |
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Chemical Property |
Trait relating to a change in the make-up of the substance |
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Phase (State) Change |
The amount of energy required to change from one phase (state) to another |
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Physical Change |
A change that alters the form or appearance of a material but does not make the material into another substance |
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Chemical Change |
A change in matter that produces a new substance, the new substance is made up of the same elements as the original substance but now in different combinations |
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Precipitate |
A solid formed during a chemical rxn |
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Atom |
Most simple; can't be broken down any further |
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Element |
Made up of the same types of atoms and ONLY those atoms |
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Compound |
Contains at least 2 different types of elements; has different properties than the elements |
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Mixture |
2 or more different elements physically combined; they can be separated, retains properties of compounds |
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Melting |
A substance becomes liquefied by heat |
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Evaporation |
Substance in a liquid state changing to a gaseous state due to an increase in temperature |
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Freezing |
Below 32°F |
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Boiling |
At 212°F |
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Condensation |
Water that collects as droplets on a cold surface when humid air is in contact with it |
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Sublimation |
A chemical process where a solid turns into a gas without going through a liquid stage |
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Endothermic Reaction |
A process or reaction in which the system absorbs energy from its surroundings |
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Exothermic Reaction |
A chemical reaction that releases energy by light or heat |
