For each process below

CHEMISTRY · Subjective · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

For each process below, state whether it is a chemical change or a physical change and provide a brief justification. (i) I2(s)⇌I2(g)\text{I}_2(s) \rightleftharpoons \text{I}_2(g) (ii) CaCO3(s)→CaO(s)+CO2(g)\text{CaCO}_3(s) \rightarrow \text{CaO}(s)+\text{CO}_2(g)

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