Endothermic Reaction

Definition:
An endothermic reaction is a chemical reaction that absorbs energy in the form of heat from the surroundings. In other words, it is a type of reaction that requires energy to be supplied to it to proceed. The energy absorbed by the reaction is usually in the form of heat, but it can also be in the form of light or electricity.

Examples:
There are many examples of endothermic reactions in chemistry. Some of the most common examples include:

- Dissolving ammonium nitrate in water
- Melting ice
- Evaporating water
- Baking soda and vinegar reaction
- Photosynthesis

Characteristics:
Some of the characteristics of an endothermic reaction are:

- Energy is absorbed from the surroundings.
- The temperature of the surroundings decreases.
- The reaction feels cold to the touch.
- The reactants have lower energy than the products.

Uses:
Endothermic reactions are used in many different applications, such as:

- Cold packs for injuries: These contain a reactant that undergoes an endothermic reaction when mixed with water, producing a cold sensation that can help reduce swelling and pain.
- Refrigeration and air conditioning: Endothermic reactions are used in refrigeration and air conditioning systems to absorb heat from the surrounding air and cool it down.
- Cooking: Many cooking processes, such as baking, involve endothermic reactions that absorb heat from the oven and cook the food.

Conclusion:
In conclusion, an endothermic reaction is a type of chemical reaction that absorbs energy in the form of heat from the surroundings. These reactions are characterized by a decrease in temperature and a feeling of coldness. Endothermic reactions have many important applications in everyday life, from cooling down injuries to powering refrigeration systems.