SCIENCE
CHEMISTRY
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 has occurred?
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change in the shape
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change in color
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production of a gas
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formation of a precipitate
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Explanation:
Detailed explanation-1: -Color. The changing of color of a substance is not necessarily an indicator of a chemical change.
Detailed explanation-2: -Four possible clues to chemical change include a transfer of energy, a change in color, the production of a gas, or the formation of a precipitate.
Detailed explanation-3: -Complete answer: Boiling of water is not a chemical change it is a physical change.
Detailed explanation-4: -Hence, option (C) is correct. i.e., tearing of paper is not a chemical reaction.
Detailed explanation-5: -Color Change. Production of an odor. Change of Temperature. Evolution of a gas (formation of bubbles) Precipitate (formation of a solid) 02-Apr-2021
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