Question

state one instance where water undergoes a physical change and one in which it undergoes a chemical change

Answer 1

Physical change of water --->

When water is freezed then it changes into ice.This is a physical change since the constituent of water doesn't get changed only there is a change in its shape.



Chemical change of water --->

Electrolysis of water is an great example of chemical change of water. Water splits into its constituent components hydrogen and oxygen when current is passed through it.

Hope This Helps You!

Answer 2

Answer:

Explanation:

Boiling of water to convert it into steam is a physical change - it is reversible

However,

Passing electricity through pure water decomposes it into hydrogen and oxygen. This is a chemical change and is irreversible

Have a great day