Cockermouth School AQA GCSE Covalent Bonding

What type of bonding occurs between chlorine and fluorine molecules?

• Ionic
• Metallic
• Weak intermolecular force
• Covalent

Covalent bonds occur when electrons are ….

• Discharged
• Delocalised
• Transferred
• Shared

Ionic bonds occur when electrons are ….

• Discharged
• Transferred
• Transferred
• Shared

What type structure is diamond, graphite and silicon dioxide?

• Ionic
• Giant covalent
• Simple molecule
• Metallic

How many bonds does each carbon have in diamond?

• 4
• 3
• 0
• 7

What property of diamond is an effect of LOTS of energy being required to break the many covalent bonds?

• Refractive index
• Melting point
• Transparency
• Conductivity

Explain why most giant covalent substances do not conduct electricity

• No free ions
• Delocalised electrons
• Ionic bonding
• no free electrons

Explain why graphite conducts electricity

• Has free electrons
• Has free ions
• Is a metal
• Is a solid

Explain why graphite can act as a lubricant

• High melting point
• Low melting point
• Layers slide
• Free electrons

What is graphene?

• One layer of graphite
• Hydrocarbon
• Alkene
• Part of diamond