SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is not a clue that a chemical change is taking place?
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rapid release of energy (heat, light, or sound)
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phase change
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formation of bubbles
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formation of a precipitate from solution
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Explanation:
Detailed explanation-1: -The correct answer is Changing size. It is not a clue that a chemical reaction has taken place. Explanation: A change in temperature, a change in colour, the emission of gas, and the existence of an odour are four possible indicators that a chemical reaction has occurred.
Detailed explanation-2: -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.
There is 1 question to complete.