describe the differences between elements, compounds and mixtures
(b) *compare the structure of simple molecular substances, e.g. methane, iodine, with those of giant
molecular substances, e.g. sand, diamond, graphite in order to deduce their properties
(c) *compare the bonding and structures of diamond and graphite in order to deduce properties such
as electrical conductivity, lubricating or cutting action (candidates will not be required to draw the
structures)
(d) deduce the physical and chemical properties of substances from their structures and bonding and
vice versa
