Question

2. Which of the following chemical changes does not happen because of heat? a. Rotting of apple b. Burning of paper c. Cooking vegetables d. Burning of candle 3. What is the process of water changing into ice called? a. Boiling b. Melting c. Condensation Freezing 4. In which of the following do the molecules move freely in all directions? b. Solids c. Liquids d. An iron bar 5. Which of the following process is shown by iodine and naphthalene? a. Melting 6. Sublimation c. Liquefaction d. Vapourisation 6. What is the boiling point of pure water? b. 50 °C 1.100 °C d. 0°C a. Gases a. 78 °C atter​

Answer 1

Answer:

Explanation:

1. a) rotting of apples

3. d) freezing

4. b) sublimation

5. c) 100 °C

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