On heating calcium carbonate gets converted into calcium oxide and carbon dioxide. (a) Is this a physical or a chemical change?

Monjur Alahi

On heating calcium carbonate gets converted into calcium oxide and carbon dioxide. 

(a) Is this a physical or a chemical change? 

(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.


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Salim Ahmed Kawsar

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(a) Chemical change 

(b) Acidic and basic solutions can be prepared by dissolving the products of the above process in water 

CaO+H2O →Ca(OH)2 (basic solution) 

CO2 + H2O→H2 CO3 (acidic solution)

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