1. Endothermic reaction / Endotermal

Endothermic reaction is a reaction that requires energy or absorb energy from the environment when the reaction occurs. Generally, this reaction produces cold temperatures.

Examples of endothermic:
- Assimilation
- Photosynthesis

2. Exothermic reaction / Eksotermal

Exothermic reaction is a reaction that emit energy or produce energy when the reaction occurs. Generally, this reaction produces heat.

Examples of endothermic:
- Burning kerosene oil stove
- Flame campfire when camping