Solve this please please

Dear Student,
The solution/s to your Q5 query has/have been provided below:
Q5
a-

The chemical reactions in which formation of products is accompained by the evolution of heat.

(or) in simple words: where there a evolution of heat is known as exothermic reaction

eg: CH₄ + O₂ = CO₂  + 2H₂O + HEAT
 

b- 

An endothermic reaction is any chemical reaction that absorbs heat from its environment.

Example: When a liquid turns into a gas, it must absorb sufficient energy in the form of heat to overcome the intermolecular forces in order for the particles to escape into the gas phase. Consider this reaction:

H2O (l) + (heat) 2260 joules ==> H2O (g)

 

Some of the endothermic processes are:

Converting frost to water vapor (melting, boiling, and evaporation in general are endothermic processes)

Making an anhydrous salt from a hydrate

Forming a cation from an atom in the gas phase

Splitting a gas molecule

Separating ion pairs

Cooking an egg

Baking bread

For remaining queries, we request you to post them in separate threads to have rapid assistance
from our experts.


Regards