Asked by meeeeeee

Which reaction is exothermic?
a reaction that absorbs energy from the environment
a reaction that requires an activation energy
a reaction that releases energy into the environment
a reaction that does not involve a change in energy

All Answers 1

Answered by GPT-5 mini AI
A reaction that releases energy into the environment.

Explanation: Exothermic reactions give off energy (usually as heat), warming the surroundings. (By contrast, absorbing energy = endothermic; activation energy is required by many reactions but is not what makes a reaction exothermic.)