Practice Test- Unit 2 Matter

Front

What does the Law of Conservation of Mass state?

Back

Matter is neither created nor destroyed in a chemical reaction.

Front

What is an example of a physical property?

Back

Magnetism.

Front

Why is air considered to be matter?

Back

Because it has mass and takes up space.

Front

How many atoms are in one unit of CaCO3?

Back

5.

Front

What is CO2 an example of?

Back

A compound.

Front

Define matter.

Back

Anything that has mass and occupies space.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What is density?

Back

Density is the mass of an object divided by its volume.