Question

Name the following compounds. Also write the symbols/formulae of the ions present in them :

1. CuSO4
2. (NH4)2SO4
3. Na2O
4. Na2CO3
5. CaCl2

Answer 1

1. Copper sulphate (Copper ion – Cu²⁺ and Sulphate ion – SO₄²⁻)
2. Ammonium sulphate (Ammonium ion −NH₄⁺ and Sulphate ion −SO₄²⁻)
3. Sodium oxide (Sodium ion −Na⁺ and Oxygen ion −O²⁻)
4. Sodium carbonate (Sodium ion −Na⁺ and Carbonate ion −CO₃²⁻)
5. Calcium chloride (Calcium ion −Ca²⁺ and Chloride ion −Cl⁻)