Q-8 Answer in long questions.
1. Classify the changes involved in the following process as physical or chemical changes.
(a) Photosynthesis (b) Dissolving salt in water (c) Burning of coal (d) Melting of wax
(e) Digestion of food
(f) Dissolve sugar in water
2. Explain sea breeze or land breeze.
1
3. List the differences between clayey soil and sandy soil.
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photosynthesis it is a chemical change
dissolving salt in water. physical change
burning of the fuel is a chemical change
melting of wax. physical change
digestion of food it is a chemical change
dissolve sugar in water it is a chemical change
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thanks for free points
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