These three properties can change when a chemical reaction occurs.
What is change in color, formation of bubbles, change in odor, release of light, or release in heat?
This type of reaction absorbs thermal energy.
What is endothermic reaction?
The minimum amount of energy needed to start a chemical reaction.
activation energy
This type of reaction releases energy.
What is exothermic reaction?
A combustion reaction has these 3 things in every combustion reaction
What are oxygen, carbon dioxide, and water?
A catalyst that speeds up chemical reaction in living beings.
What is an enzyme?
This stops or slows a chemical reaction.
Name three things you can do to increase the reaction rate.