Question

3. Mention whether it is chemical or physical change.
a. Photosynthesis.
b. Digestion of food.
C. Rusting of iron.
d dissolving salt in water.
E. Beating aluminium to make Aluminium foil.​

Answer 1

Answer:

Chemical Processes

Explanation:

A) Photosynthesis :- Chemical change

B) Digestion of Food :- Chemical change

C) Rusting of Iron :- Physical change

D) Dissolving salt in water :- Physical change

E) physical changen

Answer 2

Answer:

(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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