Question

Write true or false against the following statements
Melting of ice is a physical change
(A)True
(B)False

Answer 1

Hint: Physical changes are changes which affect the form of a chemical substance but not its chemical composition. We need to see the form of the ice melting into water to check whether it is physical change or chemical change.

Complete Solution :
-We know that a physical change is a change which affects the form of a chemical substance but the chemical composition remains unaltered.
-Melting of ice and changing to water is a physical change as we add energy while changing water to liquid.
-Energy is needed to create a phase change to convert it from solid to liquid.
-Also no chemical substance is formed in the process and this change is reversible.
-It involves only the change in physical state from solid to liquid and no new chemical substance is formed and the composition doesn’t change.
-Therefore melting of ice is a physical change and it is a true statement.
So, the correct answer is “Option A”.

Note: The melting of ice is a reversible physical change as it can be transformed back into solid ice by freezing it. Physical changes involving change of state are all reversible.