Diamond, Graphite & Graphene — GCSE Chemistry Revision
Revise Diamond, Graphite & Graphene for GCSE Chemistry. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP.
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Go to NanoparticlesWhat is Diamond, Graphite & Graphene?
Diamond, graphite, and graphene are allotropes of carbon, meaning they are different structural forms of the same element. Their different atomic arrangements give them unique and contrasting properties. Diamond is extremely hard, graphite is soft and conducts electricity, and graphene is a single layer of graphite with remarkable strength and conductivity.
Board notes: The allotropes of carbon are a key example of how structure determines properties. All boards require knowledge of diamond and graphite. Graphene and fullerenes are also included in most specifications, particularly for higher-tier students.
Step-by-step explanationWorked example
Graphite is used as a lubricant and in pencil 'leads' because its layers of carbon atoms can easily slide over one another. The weak forces between the layers are easily broken, allowing the material to be soft and leave a mark on paper.
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Common mistakes
- 1Confusing the properties of diamond and graphite. Remember: Diamond is hard because of its 3D network; graphite is soft because of its layers.
- 2Thinking that graphite conducts electricity because of free ions. It conducts because of delocalised electrons between its layers.
- 3Forgetting that graphene is a single, two-dimensional sheet of carbon atoms.
Diamond, Graphite & Graphene exam questions
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Step-by-step method
Step-by-step explanation
4 steps · Worked method for Diamond, Graphite & Graphene
Core concept
Diamond, graphite, and graphene are allotropes of carbon, meaning they are different structural forms of the same element. Their different atomic arrangements give them unique and contrasting properti…
Frequently asked questions
What are fullerenes?
Fullerenes are another allotrope of carbon, with molecules based on hollow spheres or tubes of carbon atoms. The most famous is Buckminsterfullerene (C₆₀), which has a spherical shape like a football.
Why is graphene being researched so heavily?
Graphene is incredibly strong for its weight, transparent, and an excellent conductor of electricity and heat. These properties give it potential applications in electronics, materials science, and medicine.