Question

what does one mean by exothermic and endothermic reaction give example class 10th science verified answer​

Answer 1

Answer:

Answer: Exothermic Reaction: A chemical reaction in which heat is given out is known as exothermic reaction. For example. Endothermic Reaction: A chemical reaction in which heat energy is absorbed is known as endothermic reaction.

Answer 2

Explanation:

In an exothermic reaction, when two reactants react with each other, energy or heat is released.

Example:-

1) Combustion = CH4 + O2 → CO2 + H2O + Heat

2) Respiration is the sum of the chemical reactions that release energy from food molecules.

Glucose + Oxygen = Carbon dioxide + Water

In an endothermic reaction, heat or energy is involved or required for the reaction.

Example:-

1) When ammonium chloride (NH4Cl) is dissolved in water, an endothermic reaction takes place. The salt dissociates into ammonium (NH4+) and chloride (Cl–) ions. The chemical equation can be written as follows: NH4Cl (s) + H2O (l) ⟶ NH4Cl (aq) – Heat

2) Ice + Heat = Water