GENERAL KNOWLEDGE

Detailed explanation-1: -A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. A reaction or change is exothermic if heat is released by the system into the surroundings.

Detailed explanation-2: -Exothermic reactions transfer energy to the surroundings and the temperature of the surroundings increases. Endothermic reactions take in energy and the temperature of the surroundings decreases. Combined Science. Energy changes.

Detailed explanation-3: -A reaction or process in which heat is transferred to a system from its surroundings is endothermic. The first law of thermodynamics states that the energy of the universe is constant. The change in the internal energy of a system is the sum of the heat transferred and the work done.

Detailed explanation-4: -Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products. These reactions lower the temperature of their surrounding area, thereby creating a cooling effect.