Conversion of ice into water and water into ice is an example of change that can be reversed. Give four more examples where you can say that the changes can be reversed.

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Solution

A reversible change is a change which can be reversed back to the original state of the substance.

Examples of reversible changes are as follows:
(i) Melting of wax
(ii) Folding of a paper
(iii) Inflating a tire or balloon
(iv) Stretching of a rubber band

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Question 11

Can we reverse the following changes? If yes, suggest the name of the method.
Water into water vapour
Water vapour into water
Ice into water
Curd into milk

Q. Can we reverse the following change? If yes, suggest the name of the method.
(a) Water into water vapour
(b) Water vapour into water
(c) Ice into water
(d) Curd into milk.

Q. In an experiement of conversion of ice into water and water into vapours, observation were recorded and graph was plotted. It can be concluded that

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Cooling from Evaporation

Standard IX Chemistry

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Conversion of ice into water and water into ice is an example of change that can be reversed. Give four more examples where you can say that the changes can be reversed.

A reversible change is a change which can be reversed back to the original state of the substance. Examples of reversible changes are as follows: (i) Melting of wax (ii) Folding of a paper (iii) Inflating a tire or balloon (iv) Stretching of a rubber band

A reversible change is a change which can be reversed back to the original state of the substance.

Examples of reversible changes are as follows:
(i) Melting of wax
(ii) Folding of a paper
(iii) Inflating a tire or balloon
(iv) Stretching of a rubber band