Chemistry 0620 · IGCSE · Simple molecules and covalent bonds

Simple molecules and covalent bonds — practice question

The diagrams display part of the structures of five substances, A, B, C, D and E.

(a(i))[2]

Which two of structures A, B, C, D or E have covalent bonding?

(a(ii))[1]

Which one of structures A, B, C, D or E is a diatomic molecule?

(a(iii))[1]

Which one of structures A, B, C, D or E is a compound?

(a(iv))[1]

Which one of structures A, B, C, D or E is very soluble in water?

(a(v))[1]

Which one of structures A, B, C, D or E is used in cutting tools?

(a(vi))[1]

Which one of structures A, B, C, D or E is used in electrical wiring?

(b)[1]

What does the term element mean?

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “B / diamond lattice” …