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 is calcium oxide, CaO. The elements present in quick lime are : Calcium (Ca) and oxygen (O)
(b) Hydrogen bormide is HBr. The elements present in hydrogen bromide are : Hydrogen (H) and Bromine (Br).
(c ) Baking soda is sodium hydrogencarbonate, `NaHCO_(3)`. The elements present in bakin g soda are : Sodium (Na), Hydrogen (H), Carbon (C ) and Oxygen (O).
(d) Potassium sulphate is `K_(2)SO_(4)`. The element present in potassium sulphate are : Potassium (K), Sulphur (S) and Oxygen ( O).