Question

state whether true or false

3. There is no change in the chemical composition of a substance undergoing a physical change.

4. Burning of a candle is both a physical as well as a chemical change.

5. Change of energy does not take place in case of a chemical change.
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Answer 1

Answer:

3)true

4)true

5)false

Explanation:

hope it helps you...

Answer 2

Answer:

true

true

false... ..

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