Question

6. Iron gets rusted in moist air.
7. Digestion of food is a physical change.
8. Crystallization helps in obtaining pure and clean substance.
9. Burning of a wax candle is a physical change.​

Answer 1

6. Iron gets rusted in moist air. True

7. Digestion of food is a physical change.False

8. Crystallization helps in obtaining pure and clean substance.True

9. Burning of a wax candle is a physical change.True

Answer 2

Answer:

6.iron gets rusted in the moist air because rust grows well in moist

7.Digestion of food is physically change because it is physically taken in our body

8.because crystallisation process evaporates liquid particles and left solid particles

9. no burning of iron is not physical change because in burning of candle the wax gets melted

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