SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is the following is NOT a sign of a chemical change?
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Releasing a gas
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Releasing bubbles
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Changing state
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Rearranging atoms
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Explanation:
Detailed explanation-1: -> Sublimation is a process in which the substance’s phase transition occurs directly from solid to the gaseous phase. Hence, it is physical change not chemical.
Detailed explanation-2: -Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.
Detailed explanation-3: -Melting of ice is not an example of chemical change as the chemical composition of water remains the same even after melting.
There is 1 question to complete.