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Matter
the material of the universe
Atom
the fundamental units of which elements are composed
Compound
a substance made of two or more different elements joined together in a specific way
Molecule
a collection of atoms bonded together that behave as a unit
Element
a substance that cannot be decomposed into simpler substances by chemical or physical means; it consists of atoms all having the same atomic number
Solid
one of three states of matter; it has a fixed shape and volume
Liquid
one of three states of matter; fits the shape of its container
Gas
one of three states of matter; a substance with no definite shape or volume
Physical Property
a characteristic of a substance that does not involve changing to another substance
Chemical Property
a characteristic that describes the ability of a substance to change to a different substance
Physical Change
a physical change involves a change in one or more physical properties, but no change in composition
Chemical Change
a chemical change transforms a substance into one or more new substances
Mixture
a substance with variable composition
Alloy
a mixture of elements that have metallic properties
Pure Substance
a substance with a constant composition- a pure element or pure compound
Homeogenous Mixture
a mixture that is the same throughout
Solution
a homeogeneous mixture
Heterogeneous Mixture
a mixture that has different properties in different regions of the mixture
Note
Flashcard