Question

1. Classify the following changes into slow and
fast changes.
(a) Blinking of eyes
(b) Rusting of iron
(c) Hatching of an egg
(d) Erosion of soil
2. Classify the following changes into reversible
and irreversible changes.
(a) Burning of wood
(b) Formation of water vapour from water
(c) Digestion of food
(d) Grinding of wheat grains
and
1
in a
1
1
that
nged
we
ape
1​

Answer 1

Answer:

1.Blinking of eyes-Fast change

Rusting of iron- Slow change

Hatching of an egg-Slow change

erosion of soil-Soil eroison

2.Burning of wood-Irreversible change

Formation of water vapour from water-Reversible change

Digestion of food-Irreversible change

Grinding of wheat grains- Irreversible change