Give two examples for the following type of change:

Chemical changes

Give two examples for the following type of change:

Reversible change

Give two examples for the following type of change:

Irreversible changes

Give two examples for the following type of change:

Desirable changes

Give two examples for the following type of change:

Undesirable changes

Classify the following as reversible or irreversible changes (in tabular form):

Ripening of a fruit, burning of dry leaves, cooling of the air, melting of ice cream, baking a cake, dissolving sugar in water, blooming of flowers, development of a baby into an old man, bursting of a cracker.

Bring out the important differences between :

Physical change and chemical change -