How do we get a substance back in its original form in case of a reversible change? Explain using the appropriate example(s).

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Solution

Reversible change - A change that can be reversed is called a reversible change.
A physical change is one in which no new material is generated.
It's a transformation that merely modifies a substance's appearance, not its chemical content.
For example, ice melts and forms water, and if again that water is frozen it will form ice.

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Question 15

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(a) Making sugar solution is a …………………. change
(b) A physical change is generally ……………………..
(c) Grinding of wheat grain changes its size. It is a …………….. change.
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(e) change because a new ……………… is formed

A type of change in which we cannot get back the original substance.

Q. When a change can be reversed, meaning when we can get back the original product, it is a reversible change.

are combination reactions a reversible change? since, on decomposing a compound , we get its constituent substances.

Q. In which of the following changes, the substance can be converted back to its original form?

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