| A | B |
|---|
| element | ubstance in which all the atoms in a sample are alike |
| compound | substance made of the combined atoms of two or more elements |
| substance | matter that is an element or a compound |
| heterogenous mixture | a mixture in which different parts can easily distingushed |
| homogenous mixture | a mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution |
| solution | a homogenous mixture containing particles so tiny they cannot be seen even with a microscope; particles in a solution settle and scatter light |
| colloid | a HETERogenous mixture containing tiny particles that never settle outelatin; for example, milk and g |
| Tyndall effect | the scattering of light by particles in a mixture; this effect can be seen in all colloids |
| suspensation | a HETERogeneous mixture containing a liquid in which larger particles eventually settle out |
| coagulation | Process that destroys colloid structure can be used to reduce a colloidal form of air polluation |
| physical property | any characteristic of a material that can be observed withoout changing the identity of the material itself |
| physical change | a change in the size, shape, color, or state of matter |
| chemical change | the change of substance to different substances |
| chemical property | a characteristic of a that indicates whether it can undergo a specific chemical change |
| law of conservation of mass | a law stating that matter is neither created nor destroyed during a chemical change |
