States of Matter!

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14 Terms

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Matter
Anything that occupies space and has mass.
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Three main states of matter
Solid, liquid, gas
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Molecule
A group of atoms bonded together.
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Atom
Small building block or unit of matter.
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Solid
Molecules are tightly packed together and don't move about much within the substance.
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Liquid
Molecules are some distance apart and can move about and bump into one another within the substance.
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Gas
Molecules are far apart and can move about freely within the substance.
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Compressibility
Measures the change in volume resulting from applied pressure.
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Melting
Occurs when a solid turns into a liquid.
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Freezing
This is what happens when a liquid becomes solid.
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Vaporization
Occurs when a liquid turns to vapor (gas).
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Condensation
The opposite of vaporization; it occurs when a gas turns into a liquid.
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Sublimation
When a solid becomes a gas, without ever becoming a liquid.
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Phase diagram
A way to show the changes in the state of substance as it relates to temperature and pressure.