Science Chapter 15 Sec 1 + 2

Front 1

Substance

Back 1

a type of matter with a fixed compound

Front 2

Element

Back 2

a pure substance in which all the atoms are identical

Front 3

Compound

Back 3

a substance in which the atoms of two or more elements are combined in a fixed proportion

Front 4

Heterogenous mixture

Back 4

mixture in which different materials can be distinguished easily

Front 5

Homogenous mixture

Back 5

contains two or more gaseous, liquid, or solid substances blended evenly throughout

Front 6

Solution

Back 6

homogenous mixture of particles so small that they can’t be seen with a microscope and will never settle to the bottom of their container

Front 7

Colloid

Back 7

type of mixture with particles that are larger than those in solutions but not heavy enough to settle

Front 8

Tyndall effect

Back 8

scattering of light by colloid particles

Front 9

Suspension

Back 9

Heterogenous mixture containing a liquid in which visible particles settle.

Front 10

physical property

Back 10

any characteristic of a material that you can observe without changing the identity of the substances that make-up that material

Front 11

physical change

Back 11

a change in size, shape, or state of matter

Front 12

distillation

Back 12

the process for separating substances in a mixture by evaporating a liquid and recondensing its vapor

Front 13

chemical property

Back 13

a characteristic of a substance that indicates whether it can undergo a certain chemical change

Front 14

chemical change

Back 14

a change of one substance to another

Front 15

law of conservation of matter

Back 15

scientific law that states the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after a change