D. electro magnetic waves. it’s literally in the name
There are two possible situations.
1) If a phase change is not occurring, then the heat added contributes to increased translational energy of the particles. What that means is the particles move/vibrate faster.
2) If a phase change is occurring, then the heat added contributes to the breaking of bonds or intermolecular forces (depending on the chemical nature of the matter you're dealing with).
<span>A chemical reaction in which energy is absorbed is known as an endothermic reaction. The characteristics of the reaction in order from start to finish is as follows:
1. Lower energy of reactants
2. Transition state
3. Higher energy of products
This implies that in an endothermic reaction, </span><span>the products are less stable than the reactants.</span>