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Question

Chemical change involves
  1. Change in the composition
  2. No change in weight of the reacting substance
  3. Absorption (or) the release of energy
  4. Formation of precipitate

A
Absorption (or) the release of energy
B
No change in weight of the reacting substance
C
Formation of precipitate
D
Change in the composition
Solution
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Chemical changes involves:
  • Change in composition of the new substances formed.
  • A minimum amount of energy needed to initiate a reaction(activation energy)
  • Formation of precipitate
  • Colour and temperature changes.

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