Solution:
The given statement is true.Concept- A pure material that cannot be broken down chemically and has an equal number of protons in each of its atomic nuclei are both considered elements in chemistry. Chemical bonds that keep the individual atoms together when various elements are mixed result in a chemical reaction and the formation of compounds.
1) Quick lime contains calcium and oxygen.
2) Hydrogen bromide contains hydrogen and bromide.
3) Baking bromide contains sodium, hydrogen, carbon and oxygen.
4) Potassium sulphate contains potassium, sulphur and oxygen.
Hence, the given statement is true.
