Question

Change of colour in calcium carbonate is one example of chemical change. Justify the statement.​

Answer 1

Answer:

When Calcium carbonate, CaCO3 heated above 840C⁰ it decomposes to Calcium oxide, CaO a grayish white solid and can't be reversed with same reactants. Thus a chemical change.

CaCO3 (Pure white) --heat--> CaO (grayish white) + CO2

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