TYPES OF CHEMICAL REACTIONS
ENERGY IN CHEMICAL REACTIONS
TERMINOLOGY
1

This type of chemical reaction requires oxygen and produces heat and light.

What is combustion?

1

This type of chemical reaction results in the release of energy.

What is an exothermic reaction?

1

This event involves a gas changing to a liquid, a liquid changing to a gas or a solid, or a solid changing to a liquid. 

What is a change of state?

2

This type of chemical reaction involves two or more molecules combining to produce a new molecule.

What is a synthetic reaction?

2

This type of chemical reaction results in the absorption of energy.

What is an endothermic reaction?

2

This term refers to the amount of energy needed to trigger a chemical reaction.

What is activation energy?

3

This type of chemical reaction involves a single molecule separating into two or more different molecules.

What is a decomposition reaction?

3

This term refers to the point at which a chemical reaction begins.

What is a transition state?

4

This type of chemical reaction involves two or more molecules exchanging atoms to create something new.

What is a replacement reaction?

4

This term refers to the molecule(s) that existed before a chemical reaction began.

What is a reactant or reactants?

5

The scientific concept states that energy cannot be created or destroyed.

What is the Law of Conservation of Energy?

5

This term refers to the molecule(s) created by a chemical reaction.

What is a product or products?

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