Information about four substances, W, X, Y and Z, is shown.
W, X, Y and Z are graphite, poly(ethene), sodium chloride and silicon(IV) oxide but not in that order.
What are W, X, Y and Z ?
W
X
Y
Z
graphite
poly(ethene)
silicon(IV) oxide
sodium chloride
sodium chloride
graphite
poly(ethene)
silicon(IV) oxide
poly(ethene)
sodium chloride
graphite
silicon(IV) oxide
silicon(IV) oxide
graphite
poly(ethene)
sodium chloride
Which statement about carbon is correct?
Diamond and graphite both have simple molecular structures.
Diamond and graphite are both used to make cutting tools.
Each carbon atom in diamond is bonded to three other carbon atoms.
Graphite conducts electricity and has a giant covalent structure.
Which substance has a similar structure to silicon(IV) oxide?
carbon dioxide
diamond
graphite
sodium oxide
Which row about the properties of both diamond and silicon(IV) oxide is correct?
conductor
of electricity
type of
molecule
yes
giant covalent
yes
simple covalent
no
giant covalent
no
simple covalent