Answer:
In chemistry, a reaction is considered endothermic if it absorbs or takes in energy from its surroundings. This means that energy is being transferred from the surrounding environment into the system (the substances involved in the reaction). As a result, the temperature of the surrounding environment decreases during the reaction.
On the other hand, an exothermic reaction releases or gives off energy to its surroundings. In this case, energy is transferred from the system to the surrounding environment. As a result, the temperature of the surrounding environment increases during the reaction.
To summarize:
- Endothermic reaction: Absorbs or takes in energy from the surroundings, causing a decrease in temperature.
- Exothermic reaction: Releases or gives off energy to the surroundings, causing an increase in temperature.
It's important to note that the terms "endothermic" and "exothermic" describe the flow of energy during a reaction, not the speed or rate of the reaction.