Chemistry C1.2

C1 2.1

Limestone is useful for making cement. Cement is mixed with sand, aggricate and water to make concrete.

Limestone is mainly made up of 'Calcium Carbonate'.

Calcium Carbonate -> Calcium Oxide + Carbon Dioxide
CaCO3          ->        CaO         +       CO2 

Thermal decomposition is when you heat something strongly.

C1 2.2

(METAL) carbonate -> (METAL) oxide + carbon …