Classify the changes involved in the following processes as physical or chemical changes: (a) Digestion of food (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax
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(a) Photosynthesis - Chemical change
(b) Dissolving sugar in water - Physical change
(c) Burning of coal - Chemical change
(d) Melting of wax - Physical change
Explanation:
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