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

Explanation

(a) The phenomena given in question is a chemical change because the composition of product formed is different from the substance taken. The reaction involved is
`underset("Calcium carbonate")(CaCO_(3)) overset(triangle)(to) underset("Calcium oxide") (CaO)+underset("Carbon dioxide")(CO_(2))`
(b) Yes
(i) When CaCO dissolves in water it forms calcium hydroxide which is basic solution.
`CaO(s)+H_(2)O(l) to underset("Calcium hydroxide")(Ca(OH)_(2)(aq))`
(ii) When `CO_(2)(g)` dissolves in water it forms carbonic acid which is acidic solution.
`CO_(2)(g)+H_(2)O(l) to underset("Carbonic acid")(H_(2)CO_(3)(aq))`