A type of reaction that absorbs energy in the form of heat or light.

A type of reaction that releases energy through heat or light

The rule that states that matter cannot be created or destroyed during chemical reactions.

A change in matter that does not involve a change in chemical makeup

A substance that undergoes a chemical change

A solid formed in a chemical reaction between two liquids

A substance that results from a chemical change

Sodium and chlorine react to form sodium chloride. Sodium and chlorine are examples of

Sodium and chlorine react to form sodium chloride. Sodium chloride is an example of a

In a _______________, a new product is always formed.

A __________ involves a change in state, like melting, freezing, or boiling.

Plants absorb sunlight to carry out the process of photosynthesis. This is an example of

To activate a glow stick, a glass tube containing one solution is cracked inside of a plastic tube containing a different solution. The mixture of these two solutions causes the tube to give off light. This is an example of

When sodium hydroxide is mixed with copper chloride, it produces a clear solution and a blue solid called a