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

Quick lime: It is the commercial name of the compound. Its chemical name is calcium oxide and the chemical formula is $\mathrm{CaO}$

Elements present : calcium (Ca) : Oxygen (O).

Hydrogen bromide: The chemical formula of the compound is the elements present: Hydrogen (H); Bromine(Br).

Baking powder: It is the commercial name of the compound. Its chemical name is Sodium hydrogen carbonate and the chemical formula is ${\mathrm{NaHCO}}_3$

Elements present: Sodium (Na), Hydrogen (H), Carbon (C), and Oxygen (O).

Potassium sulphate: The chemical formula of the compound is ${\mathrm{K}}_2{\mathrm{SO}}_4$

Elements present : Potassium (K), Sulphur (S), Oxygen($\mathrm{O}$)