CLASS 7 Chapter 6 Physical and Chemical Changes
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 (e) Beating aluminium to make aluminium foil (f) Digestion of food Solution 1. chemical change Physical change Photosynthesis Dissolving sugar in water Burning […]
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