Question

Long answer type questions:-

1) Give two examples for each of the following casts-

a) Physical changes which are
reversible.
b) Chemical changes which are reversible.
c) Chemical changes.

Please Help Me Urgently ​

Answer 1

Answer:

1. (a) Melting of ice
2. salt dissolved in water

Answer 2

physical changes = stretching a rubber band

chemical changes=Ammonium chloride ⇌ ammonia + hydrogen chlorid

cooking of food