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15 terms

science ch. 9 vocab

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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
is a heterogenous mixture that, like a solution, never settles
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 materials can be easily distinguished
homogeneous mixture
a mixture in which different materials are blended evenly so the mixture is the same throughout; also called a solution
law of conservation of mass
a law stating that material is neither created nor destroyed during a chemical change
physical change
a change in 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
Subtance
matter that is an element or a coumpound
Suspension
a meterogenous 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