Question

Why is the melting of ice a physical change? It changes the chemical composition of water. It does not change the chemical composition of water. It creates new chemical bonds. It forms new products. It is an irreversible change that forms new products.

Answer 1

Answer: It does not change the chemical composition of water.

Explanation:

A physical reaction is defined as the reaction in which a change in shape, size takes place. No new substance gets formed in these reactions.

There is no change in chemical composition.

Example : melting of ice

$H_2O(s)\rightarrow H_2O(l)$

A chemical reaction is defined as the reaction in which a change in chemical composition takes place. A new substance is formed in these reactions by breaking of old and making of new bonds.

Example: Oxidation of magnesium leads to formation of white magnesium oxide and is a chemical change.

$2Mg+O_2\rightarrow 2MgO$

Answer 2

It does not change the chemical in the composition of water. hope it helps