Which of the following is an example of an irreversible physical change? a. boiling soup b. burning wood c. freezing water d. cracking an egg

 d. cracking an egg

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

1. Boiling soup : Only the phase change takes place, thus  a physical change and can be reversed by condensation.

2. Burning wood: the chemical reaction occurs by combination of wood with oxygen , thus a chemical change.

3. Freezing water: Only the phase change takes place, thus a physical change and can be reversed by melting

4. Cracking an egg: Only the state changes and thus a physical change and cannot be reversed.

yes

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