Question

decomposition of zinc carbonate is associated with

a) Physical Change
b)Chemical change
c)Both a and b​

Answer 1

Answer:

Zinc carbonate is a white powdery solid. When it is heated strongly, it starts to turn yellow and decompose - carbon dioxide gas is evolved, which forms a white precipitate in limewater. The yellow solid left behind in the test-tube is hot zinc oxide. As the hot zinc oxide cools, it turns white in colour

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