(a(i))[1]
Identify which substance, A, B, C, D, E, F or G, is a gas at 25^{\circ}C.
(a(ii))[1]
Identify which substance, A, B, C, D, E, F or G, is a solid consisting of simple molecules at 25^{\circ}C.
(a(iii))[1]
Identify which substance, A, B, C, D, E, F or G, is a metal which is liquid at 25^{\circ}C.
(b(i))[3]
Identify which substance, A, B, C, D, E, F or G, has a giant covalent structure. Use the information in Table 2.1 to give two reasons for your choice.
(b(ii))[2]
Identify which substance, A, B, C, D, E, F or G, is an ionic compound. Use the information in Table 2.1 to give one reason for your choice.