Question

Crystallisation
d. Decomposition reaction
Fill in the blanks.
1. A reversible change is one in which the
substance can be recovered.​

Answer 1

Answer:

Crystallisation

Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.

Decomposition reaction

A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. The general form of a decomposition reaction is: AB→A+B. Most decomposition reactions require an input of energy in the form of heat, light, or electricity.Aug 9, 2020

A reversible change is one in which the substance can be recovered.

No new substances are formed in a physical change. Also, the original substance can generally be recovered again in a physical change i.e. most physical changes are reversible, as the melting of ice only includes the change in physical properties like state, shape, etc.