This is about carbon and its compounds - AQA - GCSE Chemistry - Question 1 - 2021 - Paper 1
Question 1
This is about carbon and its compounds.
Fullerenes are molecules of carbon atoms.
The first fullerene to be discovered was Buckminsterfullerene (C₆₀).
What shape ... show full transcript
Worked Solution & Example Answer:This is about carbon and its compounds - AQA - GCSE Chemistry - Question 1 - 2021 - Paper 1
Step 1
What shape is a Buckminsterfullerene molecule?
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Answer
A Buckminsterfullerene molecule has a spherical shape.
Step 2
Give one use of a fullerene.
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Answer
One use of a fullerene is for drug delivery in the body.
Step 3
Complete Figure 2 to show a propanone molecule.
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Answer
In Figure 2, a propanone molecule can be represented by completing the missing bonds to include a double bond with oxygen (C=O) and single bonds between carbon (C) and hydrogen (H) atoms.
Step 4
Determine the molecular formula of propanone.
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Answer
The molecular formula of propanone is C₃H₆O.
Step 5
Why does propane have a low boiling point?
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Answer
The intermolecular forces are weak.
Step 6
Explain why graphite is a good electrical conductor.
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Answer
Graphite is a good electrical conductor due to its delocalised electrons. These electrons can move freely throughout the layers, allowing them to carry an electrical charge.
The arrangement of carbon atoms in layers, with weak intermolecular forces between layers, enables the layers to slide over one another, facilitating conductivity.
Step 7
Explain why graphite is soft and slippery.
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Answer
Graphite is soft and slippery because of its layered structure. The layers are only held together by weak intermolecular forces, allowing them to slide over each other easily, resulting in a slippery feel.
