Which of the following are chemical changes ? (i) Decaying of wood. (ii) Burning of wood (iii) Sawing of wood. (iv)Hammering of a nail into a piece of wood
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4
Answer:
(i) Decaying of wood
(ii)Burning of wood
Answered by
3
Answer:
(i) Decaying of wood.
ans) Chemical change
(ii) Burning of wood.
ans) Chemical change
(iii) Sawing of wood.
ans) Physical change
(iv) Hammering of a nail into a piece of wood.
ans) Physical change
Explanation:
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