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27 Cards in this Set

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