Classifying Matter Review/Test

Front

What is the measure of the amount of matter in an object?

Back

Mass

Front

How many molecules of water are present in 2H₂O?

Back

2

Front

What is the difference between molecules and compounds?

Back

Compounds have to have atoms from different elements bonded together.

Front

If a rock has a mass of 14g and a volume of 2cm³, what is its density?

Back

7 g/cm³

Front

What is a characteristic of a substance that can be observed without changing its identity?

Back

Physical property

Front

What is the formula for calculating density?

Back

Density = Mass / Volume

Front

What is a chemical property?

Back

A characteristic that can only be observed during a chemical reaction.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the substance's identity, while a chemical change does.

Front

What is an example of a physical property?

Back

Color, density, or boiling point.

Front

What is an example of a chemical change?

Back

Rusting of iron or burning wood.