Unit 5 – Chemical & Physical Changes Vocabulary Practice

Front

What is a chemical change?

Back

A change that occurs when one or more substances change into entirely new substances.

Front

What is a solution?

Back

A mixture where small particles are distributed evenly.

Front

What does the Law of Conservation of Mass state?

Back

Mass cannot be created or destroyed in ordinary changes.

Front

What is a chemical property?

Back

The ability to participate in chemical reactions.

Front

What type of chemical reaction gives off heat?

Back

Exothermic.

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 an example of a chemical change?

Back

Rusting of iron.

Front

What is an example of a physical change?

Back

Melting of ice.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs heat from its surroundings.

Front

What is a reactant?

Back

A substance that undergoes a chemical change in a reaction.