Question

✍Classify each of the following as physical and chemical change. Give reason.

1) Drying of a cloth under a sun.

2) Rising of hot air over a radiator.

3) Burning of kerosene in lamp.

4) Changing in colour of black tea on adding lemon juice to it.

5) Churning of milk cream to get butter.

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Answer 1

Answer:

1)physical change

2)physical change

3)chemical change

4)physical change

5)physical change

Answer 2

Answer:

1. physical, 2. physical, 3. physical, 4. chemical, 5. chemical.

Explanation:

as we all know that in a physical change no new substance is formed but in chemical change new substance is formed.