Question

1. 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
fe) Beating aluminium to make aluminium foil
(n Digestion of food​

Answer 1

Answer:

a. chemical

b. physical

c. chemical

d. physical

e. physical

f. chemical

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Answer 2

Answer:

(a) Photosynthesis  - chemical changes

(b) Dissolving sugar in water  - physical changes

(c) Burning of coal  - chemical changes

(d) Melting of wax  - physical changes

(e) Beating aluminium to make aluminium foil  - physical changes

(f) Digestion of food​ - chemical changes

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