EduNinja

[Maximum number: 1]

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

graphite

poly(ethene)

silicon(IV) oxide

poly(ethene)

sodium chloride

graphite

silicon(IV) oxide

graphite

poly(ethene)

sodium chloride

[Maximum number: 1]

Which statement about carbon is correct?

A

Diamond and graphite both have simple molecular structures.

B

Diamond and graphite are both used to make cutting tools.

C

Each carbon atom in diamond is bonded to three other carbon atoms.

D

Graphite conducts electricity and has a giant covalent structure.

[Maximum number: 1]

Which substance has a similar structure to silicon(IV) oxide?

A

carbon dioxide

B

diamond

C

graphite

D

sodium oxide

CAIE IGCSE Chemistry 2.6 Giant Covalent Structures Topic Practice