Ch 2

Front 1

Chemical change –

Back 1

matter undergoes a chemical reaction and forms a new substance

Front 2

Chemical properties –

Back 2

the potential chemical reaction a substance can undergo ex: flamabitlity, rust, explosiveness

Front 3

Physical change –

Back 3

matter trasformes in a way that it does not alter its chemical identity ex: solid to liquid, liquid to gas

Front 4

Physical properties –

Back 4

can be measures without altering the chemical identity of a substance. Ex: color, melting point, boiling point, odor, refractive index, hardness, texture etc.

Front 5

Mass –

Back 5

measure of how much matter is contained in the sample

Front 6

Weight –

Back 6

measure of how strongly gravity is pulling on matter

Front 7

Unit –

Back 7

critical information about system of measurement ad whether the base unit is modified with a prefix indicating the sample size

Front 8

Conversion factor –

Back 8

an equality by which a quantity is multiplied to convert the original units of the quantity to the new units that are desired

Front 9

Significant figures

Back 9

All digits known exactly for a experimental measurement plus one digit that is an estimate

Front 10

Scientific notation

Back 10

A method of writing figures in terms of power of ten

Front 11

Accuracy

Back 11

How close experimental measurements are to the real value

Front 12

Precision

Back 12

The reproductibility of a measurement

Front 13

Density

Back 13

The ratio of mass to volume

Front 14

Sink float method

Back 14

A method for measuring the density of glass

Front 15

Density gradient method

Back 15

A method of soil analysis