Question

State 1 instance where water undergoes a physical change and 1 in which it undergoes a chemical change.

Answer 1

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
Entender? 

Hope this helps.

Answer 2

Answer:

Explanation:

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

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