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23 Cards in this Set
- Front
- Back
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 measure of the resistance of a fluid to deformation under shear stress.
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surface tension |
the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area.
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physical property |
can be observed without changing the chelincal 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 1 phase (state) to another |
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physical change |
a change that alters the form or appearance of a material 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 subtance. |
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precipitate |
a solid formed during 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. |
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mixture |
2 or more different elements physically combined ; they can be seperated, retains properties of compounds. |
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melting |
changes from a solid to a liquid |
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evaporation |
changes from a liquid to a gas |
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freezing |
changes from a liquid to a solid
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boiling |
changes from a liquid to a gas
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condensation |
changes a gas to a liquid
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.sublimation |
changes a solid to a gas
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endothermic reaction |
reaction that absorbs energy |
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exothermic reaction |
reaction that releases energy, usually in the form of heat |