(a(i))[2]
From A, B, C, D or E, which two structures are compounds?
(a(ii))[1]
Which one of A, B, C, D or E is monatomic?
(a(iii))[1]
Which one of A, B, C, D or E conducts electricity in the solid state?
(a(iv))[1]
Which one of A, B, C, D or E is the main constituent of natural gas?
(a(v))[1]
Which one of A, B, C, D or E is a solid that dissolves in water?
(a(vi))[1]
Which one of A, B, C, D or E is a hydrocarbon?
(b)[2]
Describe two features that distinguish a mixture.