11 terms

Science Ms OConnell/ Mrs Ladd

STUDY
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Terms in this set (...)

atom
basic unit of matter
molecule
A group of atoms bonded together
element
A pure substance made of only one kind of atom
change of state
a physical change of a substance from one state to another
physical change
A change in a substance that does not change its identity
mixture
A combination of two or more substances that are not chemically combined
physical property
a trait that describes something by itself
chemical property
A characteristic of a pure substance that describes its ability to change into different substances
chemical reaction
(chemistry) a process in which one or more substances are changed into others
compound
A substance made up of atoms of two or more different elements joined by chemical bonds
law of conservation of mass
Matter is not created nor destroyed in any chemical or physical change