Question

write a short note on physical and chemical change with example

Answer 1

Answer:

a physical change is is a change when change occurs but the fundamental arrangement of the molecules does not change.it is a reversible change.

eg: salt solution.

chemical change change when change occurs but the fundamental arrangement of the molecules completely change and a one or new substance is formed.

eg. rusting if iron

Answer 2

Answer:

Physical change : When a substance combines with another to form a new substance,and can be changed again is called physical change.

Eg : Melting of Ice,boiling of milk

Chemical change : When a substance combines with another to form a new substance and cannot be changed again is called chemical change.

Eg : Digestion of food,Cooking of food.