Give the names of the elements present in the following compounds:

(a) Calcium oxide, CaO is also known as quick lime. The elements present in quick lime are: Calcium (Ca) and Oxygen (O).

(b) The chemical formula of hydrogen bromide is HBr. The elements present in hydrogen bromide are: Hydrogen (H) and Bromine (Br).

(c) Baking soda is sodium hydrogen carbonate, and its chemical formula is NaHC0₃. The elements present in baking soda are: Sodium (Na), Hydrogen (H), Carbon (C) and Oxygen (O).

(d) The chemical formula of potassium sulphate is K₂S0₄. The elements present in potassium sulphate are: Potassium (K), Sulphur (S) and Oxygen (O).