This question is about carbon and its compounds - AQA - GCSE Chemistry - Question 1 - 2021 - Paper 1
Question 1
This question is about carbon and its compounds.
Fullerenes are molecules of carbon atoms.
The first fullerene to be discovered was Buckminsterfullerene (C₆₀).
Wh... show full transcript
Worked Solution & Example Answer:This question 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. It can also be described as ball-shaped or circular.
Step 2
Give one use of a fullerene.
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Answer
One use of a fullerene is in drug delivery, where it can be utilized for the transportation of drugs throughout the body.
Step 3
Complete Figure 2 to show a propanone molecule.
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Answer
In Figure 2, draw a line to represent each single bond between the carbon and hydrogen atoms attached to the carbon chain, ensuring the oxygen atom is also included in the bonded structure.
Step 4
Determine the molecular formula of propanone.
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Answer
The molecular formula of propanone is C₃H₆O.
Step 5
Why does propanone have a low boiling point?
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Answer
Propane has a low boiling point because the intermolecular forces are weak.
Step 6
Explain why graphite is a good electrical conductor.
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Graphite conducts electricity due to the presence of delocalised electrons. Each carbon atom in graphite is bonded to three others with strong covalent bonds, leaving one electron free to move. These delocalised electrons are able to move through the structure, facilitating the conduction of electrical charge.
Graphite is soft and slippery because of its layered structure, where the layers consist of hexagonal rings. The weak intermolecular forces between these layers allow them to slide over each other easily.
