Physical Science Unit 10 - Chemical Reactions (Practice)

Front

What type of reaction releases energy in the form of heat?

Back

Exothermic reaction.

Front

What is the process of breaking down a compound into simpler substances called?

Back

Decomposition.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst lowers the activation energy required for the reaction.

Front

What do enzymes do in biological reactions?

Back

Enzymes lower the activation energy for chemical reactions.

Front

What is a coefficient in a chemical equation?

Back

The large number to the left of a formula that indicates the number of molecules.

Front

What type of reaction absorbs energy from its surroundings?

Back

Endothermic reaction.

Front

What is the term for a substance that speeds up a chemical reaction without being consumed?

Back

Catalyst.

Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What happens to the rate of a reaction when a catalyst is added?

Back

The rate of the reaction increases.

Front

What is a product in a chemical reaction?

Back

The substances formed as a result of a chemical reaction.