Everything Science Grade 10

12.1 CHAPTER 12. THE PARTICLES THAT SUBSTANCES ARE MADE OF

Covalent molecular Covalent network Ionic network Metallic network

Name of

compound

glucose graphite silver chloride zinc

Formula C 6 H 12 O 6 or CH 2 O C AgCl Zn

Stick model

Ball-and-

stick model

Space-filling

model

Table 12.1: Different representations for compounds

Activity: Representing compounds

A list of substances is given below. Make use of atomic model kits, play dough and

toothpicks, or coloured polystyrene balls and skewer sticks to represent each of the

substances in three dimensional structures.

• glucose (C 6 H 12 O 6 )


• silica (SiO 2 )


• sodium chloride (NaCl)


• sulphur (S 8 )


• diamond (C)


• graphite (C)


• buckyballs( C 60 )


• sucrose (C 12 H 22 O 11 )


• copper (Cu)

Note

CanvasMol (VPdve) is
a website that allows
you to view several
compounds. You do
not need to know
these compounds,
this is simply to
allow you to see one
way of representing
compounds.

See video: VPcbj at http://www.everythingscience.co.za

208 Chemistry: Matter and materials