Explain giving two examples of physical change.

Explanation

(1) Conversion of ice into water is a physical change. On heating , ice melts into water. When the water is cooled , it freezes into ice. Thus ,we get ice from water by a simple method and no new substance is formed . Hence , conversion of ice into water is a phiysical change.
(2) Magnetication of iron nail is a physical change . An iron nail magnetized by induction loses its magnetism as soon as it is detached from the magnet which induces magnetism in it . An iron nail magnetized by some other methods can also be demagnetized by simple means such as hammering or heating it . Thus , the magnetization of an iron nail can be easily reversed to get original nail . Hence , it is a physical change.