👉 Exothermally refers to a substance that absorbs heat from an external source and releases it as heat back into its surroundings. Examples of substances that are exothermic include wood, coal, and gasoline, which release heat when burned or heated. In chemistry, the word "exothermic" is used to describe substances that absorb energy from their surroundings (the internal energy) and then release it in a form that can be converted into heat (the heat released). This process of absorbing and releasing
