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11 Cards in this Set
- Front
- Back
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Physical change |
Alters the form of an object without changing what type of matter it is |
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Temperature |
Changes occur when an object gains or loses heat |
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Sublimation |
The change of a state directly from a solid to a gas |
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Closer together, denser |
Particles draw_________ as they lose heat so solids are usually ________ than liquids |
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Less, farther apart, solid arrangement |
Ice is _____ denser than liquid water because just before freezing, water molecules move _____ and line up in a ______. |
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Melting point |
The temperature at which a substance melts |
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Boiling point |
The temperature at which a substance boils |
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Freezing point |
The temperature at which a substance freezes |
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0 degrees Celsius |
What is the freezing point of water? |
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100 degrees Celsius |
What is the boiling point of water? |
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Thermal expansion |
The increase in an object’s volume due to a change in heat |
