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9Sci CH9

9th Science CH9 Classification of Matter

TermDefinition
chemical change the change of substances to different substances
chemical property a characteristic of a substance that indicates whether it can undergo a specific chemical change
coagulation process that destroys colloid structure; can be used to reduce a colloidal form of air pollution
colloid a heterogeneous mixture containing tiny particles that never settle out; for example, milk and gelatin
compound substance made of the combined atoms of two or more elements
element substance in which all the atoms in a sample are alike
heterogeneous mixture a mixture in which different parts can be easily distinguished
homogeneous mixture a mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution
law of conservation of mass a law stating that matter is neither created nor destroyed during a chemical change
physical change a change in the size, shape, color, or state of matter
physical property any characteristic of a material that can be observed without changing the identity of the material itself
solution a homogeneous mixture containing particles so tiny that they cannot be seen even with a microscope; particles in a solution don’t settle and don’t scatter light
substance matter that is an element or compound
suspension a heterogeneous mixture containing a liquid in which larger particles eventually settle out
Tyndall effect the scattering of light by particles in a mixture; ;this effect can be seen in all colloids
Created by: djhockett5
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