Chapter 2: Classification Of Matter

Front 1

chemical change

Back 1

change of one substance into a new substance.

Front 2

chemical property

Back 2

any characteristic of a substance, such as flammability, that indicates whether it can undergo a certain chemical change.

Front 3

colloid

Back 3

heterogeneous mixture whose particles never settle.

Front 4

compound

Back 4

substance formed from two or more elements in which the exact combination and proportion of elements is always the same.

Front 5

distillation

Back 5

process that can separate two substances in a mixture by evaporating a liquid and recondensing its vapor.

Front 6

element

Back 6

substance with atoms that are all alike.

Front 7

heterogeneous mixture

Back 7

mixture, such as mixed nuts or a dry soup mix, in which different materials are unevenly distributed and are easily identified.

Front 8

homogeneous mixture

Back 8

solid, liquid, or gas that contains two or more substances blended evenly throughout.

Front 9

law of conversation of mass

Back 9

states that the mass of all substances present before a chemical change equals the mass of all the substances remaining after the change.

Front 10

physical change

Back 10

any change in size, shape, or state, of matter in which the identity of the substance remains the same.

Front 11

physical property

Back 11

any characteristic of a material such as size or shape, that you can observe or attempt to observe without changing the identity of the material.

Front 12

solution

Back 12

homogeneous mixture that remains constantly and uniformly mixed and has particles that are so small they cannot be seen with a microscope.

Front 13

substance

Back 13

element or compound that cannot be broken into simpler components and maintain the properties of the original subtance.

Front 14

suspension

Back 14

heterogeneous mixture containing a liquid in which visible particles settle.

Front 15

Tyndall effect

Back 15

scattering of a light beam as it passes through a colliod.