Question

Q3. Myra wants to make a list of chemical changes that occur in her surroundings. But se is confused in certain cases. How can she identify the chemical changes? Name all the characteristics of chemical changes to help her and give one example for each.​

Answer 1

Explanation:

It is irreversible change ; if the product cannot be reversed to get back the original one than it is a chemical change.

Evolution of Gas

Colour Change

Production of Odour

Change in temperature

Precipitate (formation of a solid)

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Answer 2

Answer:

Why do water pipelines burst during extreme winters in the cold regions?