1
Question
Classify
the changes involved in the following processes as physical or
chemical changes:
(a) Photosynthesis
(b) Dissolving
sugar in water
(c) Burning
of coal
(d) Melting
of wax
(e) Beating
aluminium to make aluminium foil
(f) Digestion
of food
Classify the changes involved in the following processes as physical or chemical changes:
(a) Photosynthesis
(b) Dissolving sugar in water
(c) Burning of coal
(d) Melting of wax
(e) Beating aluminium to make aluminium foil
(f) Digestion of food
Open in App
Solution
(a) Photosynthesis
→
Chemical change
(b) Dissolving
sugar in water →
Physical change
(c) Burning
of coal →
Chemical change
(d) Melting
of wax →
Physical change
(e) Beating
aluminium to make aluminium foil →
Physical change
(f) Digestion
of food →
Chemical change
(a) Photosynthesis → Chemical change
(b) Dissolving sugar in water → Physical change
(c) Burning of coal → Chemical change
(d) Melting of wax → Physical change
(e) Beating aluminium to make aluminium foil → Physical change
(f) Digestion of food → Chemical change
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