Question 1 (1 point) What is the type of energy called needed to catalyze a reaction?
3
Kinetic Energy
6
Activation Energy
9
Potential Energy
Free Energy

Activation Energy

Explanation:

Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA). Activation energy is the amount of energy required to reach the transition state. The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.