Question

24. Write the characteristics of chemical changes.
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Answer 1

Some characteristics of chemical change are as follows:

colour chage,

formation of a precipitate,

formation of a gas,

odour change,

temperature change

Answer 2

Answer:

Explanation:

1. They are irreversible  even after altering the conditions.

2.The characteristics of the products formed are completely different from those of the reactants.

3. There is change in state, colour, chemical composition and formula.

4. There is formation of a precipitate during an precipitation reaction.

5. There is change in smell (a marked odur is given).

6.There is effervesence (formastion of bubbles).