Which of the following changes indicate that a chemical change has not taken place?
A
No new substance is formed
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B
Absorption or release of heat
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C
Change in colour
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D
Evolution of gas
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Solution
The correct option is A No new substance is formed A chemical change is a permanent change in which new substances are formed that are entirely different from the original substance. It is usually accompanied by:
Change in colour
Formation of new substance
Evolution of gas
Release or absorption of energy in the form of heat, light, or sound.