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VICChemistryQuick questions
Unit 1: How can the diversity of materials be explained?
Quick questions on Allotropes of carbon and covalent network solids: VCE Chemistry Unit 1
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are fullerenes?Show answer
Fullerenes are closed-cage molecules of carbon, the most famous being (buckminsterfullerene), a 60-atom sphere of pentagons and hexagons. Each C still forms 3 covalent bonds, but the molecule is a discrete, finite object.
What are carbon nanotubes?Show answer
A carbon nanotube is a graphene sheet rolled into a cylinder, capped at the ends. Very high tensile strength along the axis, conducts along the tube, used in nanoelectronics and composite materials.
What is q1?Show answer
Explain in terms of bonding and structure why diamond is an electrical insulator but graphite conducts electricity along its layers. [3 marks]
What is q2?Show answer
A diamond crystal has a density of . Calculate the number of carbon atoms in a cube of diamond. [3 marks]
What is q3?Show answer
Compare graphene and silicon dioxide as covalent network materials. (a) Describe each structure. (b) Predict relative electrical conductivity.
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