What is an Endothermic and Exothermic Reaction?

Endothermic and exothermic reactions are fundamental concepts in chemistry. In an endothermic reaction, heat is absorbed from the surroundings, causing the surroundings to cool down. On the other hand, in an exothermic reaction, heat is released into the surroundings, causing the surroundings to heat up.

For example, when ice melts, it absorbs heat from its surroundings, making it an endothermic process. In contrast, when wood burns, it releases heat into the surroundings, making it an exothermic process. Understanding these reactions is crucial in comprehending the fundamental principles of chemical reactions.