Question

justify the following changes:-
1.dissolving of salt.
2.germination of seed.

Answer 1

1. There are two types of changes :
(a) Reversible change : In which the change can be reversed and we can get original state.
(b) Irreversible change : This type of change cannot be reversed and we cannot get back to original state.

2. Dissolving salt in water is a reversible change because when we evaporate water,we get salt and water is extract by condensation.

3. Germination is an irreversible process as seed once sown and grown into a plant,cannot give back the seed.