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27 Cards in this Set
- Front
- Back
Chemistry
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The study of matter and how it changes
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Matter
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Anything that has mass and occupies space
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elements
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a substance that cannot be broken down into simpler substances
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atom
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the smallest particle that has the properties of an element
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compound
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a substance made of atoms of more than one element bound together
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molecule
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the smallest unit of substance that exhibis all of the properties characteristics of that substance
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chemcial formula
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the chemical symbols and numbers indicating the atoms containing in the basic unit of a substance
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pure substance
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any matter that has a fixed composition and definite properties
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mixture
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a combination of more than one pure substance
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miscible
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two or more liquids that are able to dissolve into eachother in various proportions
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Immiscible
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describes two or more liquids that do not mix into eachother
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pressure
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the force exerted per unit area of a surface
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Viscosity
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the resistance of a fluid to flow
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Energy
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the ability to change or move matter
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evaporation
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the change of a substance from a liquid to a gas
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condensation
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the change of a substance from a gas to a liquid
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condensation
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the change of a substance from a gas to a liquid
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sublimation
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the change of a substance from a solid to a gas
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chemical property
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the way a substance reacts with others to form a new substance with different properties
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physical property
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a characteristic of a substance that can be observed or measured without changing the composition of a substance
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melting point
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the temp. at which a solid becomes a liquid
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boiling point
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the temp at which a liquid becomes a gas below the suface
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buoyancy
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the force iwth which a more dense fluid pushes a less dense substance upward
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chemical change
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a change that occurs when a substance changes compisition by forming one or more new substances
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physical change
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a chane in the physical form or properties of a substance that occurs
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physical change
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a chane in the physical form or properties of a substance that occurs without a change in composition
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density
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the mass per unit volume of a substance
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