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12 Cards in this Set
- Front
- Back
A form of matter that has a definite shape and a definite volume is a ____.
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solid
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A form of matter that has a definite volume but not a definite shape is ____.
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liquid
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A form of matter that has neither a definite shape or a definite volume is a ____.
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gas
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When a substance changes from a solid to a liquid is ____.
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melting
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When a substance changes from a liquid to a solid is ____.
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freezing
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When a substance changes from a gas to a liquid is ____.
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condensation
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When a substance changes from a solid directly to a gas ____.
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sublimation
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When a substance changes from a gas directly to a solid is ____.
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deposition
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Which ancient Greek philosopher believed that matter consisted of extremely small particles that could not be divided?
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Democritus
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Which Greek philosopher believed that there was not a limit to the number of times a particle could be divided?
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Aristotle
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John Dalton proposed the theory that all matter is made up of individual particles called ____, which cannot be divided.
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atoms
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Thompson's model of the atom is often called the "____" model, after a popular English dessert.
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plum pudding
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