Question

Give the names of the elements present in the following compounds.
(a) Quick lime
(b) Hydrogen bromide
(c) Baking powder
(d) Potassium sulphate.

Answer 1

(a) Quick lime - Calcium oxide - $CaO$
Elements – Calcium, oxygen.

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(b) Hydrogen bromide- $HBr$
Elements- Hydrogen, bromine.

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(c) Baking powder- Sodium hydrogen carbonate -$NaHCO_3$
Elements- Sodium, hydrogen, carbon, oxygen.

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(d) Potassium sulphate- $K_2SO_4$
Elements- Potassium, sulphur, oxygen.