Question

what is a physical and chemical change give 2 examples of each

Answer 1

Physical change is a change in which the molecules of the substance do not undergo any change.
For example : melting of ice, breaking of a glass tumbler.
Chemical change are the change in which the the molecules of the substance undergoes some changes.
for example : cooking food and rusting of iron

Answer 2

In physical change only physical property like shape and size of the object changes but in chemical change, chemical properties of object change.. Ex of physical change = heating ice and cooling water.. Ex of chemical change = burning of iron or burning of wood