Question

Growth of finger nails is a physical change.

• A. True
• B. False

Answer 1

The correct option is A True

Main reasons for growth of finger nails being classified as a physical change are:

• No new chemical substance is formed during the growth of finger nails.
• There is no chemical change in the composition of the substance i.e. nails as they grow.

Physical change: A change in which no new substance is formed and there is no change in the chemical composition of the substance undergoing the change.

• It is a temporary change.
• It is a reversible change as most of the times, the substance can be brought back to its original state.
• Only physical properties like hardness, colour etc. are changed during a physical change.
• Energy is neither consumed nor released as chemical bonds are not involved in the physical change.
• Examples: Conversion of Water $\left({\mathrm{H}}_2\mathrm{O}\right)$ from solid to liquid form, melting of wax.

Hence, the given statement is true.