Question

Mention three differences between physical and chemical changes​

Answer 1

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Such changes which do not produces any new substances after the reaction is called as the physical change, whereas the changes which bring out the formation of new substance is named as the chemical change.

So we can say that the main difference lies in the chemical composition, where one (chemical change) of the change is involved in altering the composition of the material and thus forms new substance and the other (physical change) brings out alteration in size, shape and colour only.

common example of a sheet of a paper, when it is torn into pieces, the paper just change its shape and size but its properties remain same. Another example is of the transformation of water into ice or water vapour or melting of ice, these are all forms of water, and here the chemical properties do not get changed.

Answer 2

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Explanation:

Such changes which do not produces any new substances after the reaction is called as the physical change, whereas the changes which bring out the formation of new substance is named as the chemical change. So we can say that the main difference lies in the chemical composition, where one (chemical change) of the change is involved in altering the composition of the material and thus forms new substance and the other (physical change) brings out alteration in size, shape and colour only.

Change is a part of everyone’s life, whether its a plant, animal, microorganism or any non-living matter. As these changes apply to matter only. Anything which occupies space is called as matter and matter experiences both physical as well as chemical changes.

These changes are obvious and may happen suddenly or slowly or in series of steps. These changes are not bounded into the chemical laboratory only but occur everywhere. Although it is necessary for the one to know about these changes and with this, hereby we will be describing different aspects on which the physical and chemical changes can differentiate and few examples of them