Endothermic Reactions

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings. During an endothermic reaction, the temperature of the surroundings decreases as the reaction takes in energy from the environment. This results in a cooling effect.

Key Concepts to Understand:

1. Energy Absorption: In an endothermic reaction, energy is absorbed in the form of heat from the surroundings.
2. Temperature Change: The temperature of the surroundings decreases during an endothermic reaction.
3. Examples: Common examples of endothermic reactions include photosynthesis, the melting of ice, and the evaporation of liquid water.
4. Chemical Equations: Endothermic reactions are often represented in chemical equations with the addition of heat as a reactant (e.g., A + B + heat → C).

Study Guide

Here are some key points to remember when studying endothermic reactions:

1. What is an endothermic reaction?
2. How does an endothermic reaction differ from an exothermic reaction?
3. Identify examples of endothermic reactions in everyday life.
4. How does the temperature change in the surroundings during an endothermic reaction?
5. What is the role of heat in endothermic reactions?

Understanding endothermic reactions is important in the study of chemistry and can provide insights into various natural processes and industrial applications.