Matter: Properties and Changes Test

Front

What does the law of conservation of mass state?

Back

Matter cannot be created nor destroyed.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together, such as CO (carbon monoxide).

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, e.g., freezing of water.

Front

How many hydrogen atoms are in 4H₂O?

Back

There are 8 hydrogen atoms in 4H₂O.

Front

What is NOT a sign of a chemical reaction?

Back

Change in shape is NOT a sign of a chemical reaction.

Front

Define matter.

Back

Matter is anything that has mass and takes up space.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, e.g., color, melting point.

Front

What is a chemical property?

Back

A characteristic that can only be observed during a chemical reaction, e.g., flammability.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, e.g., rusting of iron.