Here's why:
* Elastic refers to the ability of a material to return to its original shape after being deformed. It's a property of materials, not a type of chemical reaction.
* Exothermic reactions are the type of reactions where energy is released from the reactants to the surroundings. This energy release can take various forms, such as heat, light, or sound.
Examples of exothermic reactions:
* Combustion: Burning fuel releases heat and light.
* Neutralization: The reaction of an acid and a base releases heat.
* Explosions: These reactions release a large amount of energy in a short period.
Key takeaway: Use the term "exothermic" to describe chemical reactions that release energy into the surroundings.