Question

Most physical changes are reversible. Give reasons with two examples.​

Answer 1

Explanation:-

In general a physical change is reversible using physical means. For example, salt dissolved in water can be recovered by allowing the water to evaporate. Melting: Melting is when solid converts into a liquid after heating. Example of melting is turning of ice into water.

Answer 2

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Most physical changes are reversible. Give reasons with two examples.

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Most physical changes are reversible because no new products are formed. The original products can be obtained on reversing the reaction.

For Example : ⤵️

• Water of freezing changes to ice and on heating ice, again water can be obtained.

• Wax melts on heating, on cooling, again the wax can be obtained.