CLASS 7 SCIENCE CHAPTER-6
EXERCISE-1 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 Question 2: State whether the following statements are true or false. In case a statement is false, write the corrected statement …