Question

What is meant by endothermic and exothermic reactions? Give suitable example for each.

Answer 1

The reactions in which heat is absorbed are called endothermic reactions.
For example: photosynthesis
The reactions in which heat is evolved out are called exothermic reactions.
For example: Respiration

Answer 2

An endothermic reaction occurs when energy is absorbed from the surroundings in the form of heat.(Example: Photosynthesis, melting of ice, evaporation). Conversely, an exothermic reaction is one in which energy is released from the system into the surroundings. (Example: Explosions, concrete setting, nuclear fission and fusion).

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