iGCSE Topic 1g Diamond, Graphite and fullerene DOUBLE REVISION

Covalent bonding occurs between...

• non-metal and non-metal

• non-metal and metal

• metals and metals

A covalent bond is a shared pair of

(a)   between 2 ​ (b)   atoms

• electrons
• protons
• neutrons
• non-metal
• metal

The electrostatic forces in a covalent bond are between the shared pair of ​ (a)   and the ​ (b)   of the bonded ​ (c)  

• electrons
• nuclei
• protons
• neutrons
• nucleus
• atoms
• ions

Answer explanation

Match the following

• Graphite

• 
• Diamond

• 
• C₆₀ Fullerene

• 

What are the typical properties of diamond?

• high mpt/bpt

• very strong/hard

• does not conduct electricity

• low mpt/bpt

• soft

Diamond has a very ​ (a)   melting point because it has a ​ (b)   structure and there are ​ (c)   ​ (d)   bonds between carbon ​ (e)   that require a lot of energy to overcome.

• high
• strong
• covalent
• atoms
• low
• weak
• ionic
• ions
• molecules
• giant lattice

Diamond has a very ​ (a)   melting point because it has a ​ (b)   structure and there are ​ (c)   ​ (d)   bonds between carbon ​ (e)   that require a lot of energy to overcome.

• high
• strong
• covalent
• atoms
• low
• weak
• ionic
• ions
• molecules
• giant lattice

Diamond is a very ​ (a)   material because it has a ​ (b)   structure.

Each carbon is ​ (c)   bonded to ​ (d)   other carbons in a ​ (e)   shape.

• hard
• giant lattice
• covalently
• 4
• tetrahedral
• ionically
• 3
• soft
• simple molecular

Diamond does not conduct electricity because there are no________ __________ to move through the structure

Diamond ​ (a)   ​conduct electricity because there are no delocalised ​ (b)   to move through the structure

• does not
• electrons
• does
• ions
• protons
• neutrons