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).
Wha... 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?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The shape of a Buckminsterfullerene molecule is spherical, resembling a hollow ball or soccer ball structure.
Step 2
Give one use of a fullerene.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
One use of a fullerene is in drug delivery systems, where they can transport medication around the body.
Step 3
Complete Figure 2 to show a propane molecule.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To complete Figure 2, draw single lines between the carbon atoms and the hydrogen atoms to represent each single bond, ensuring that the appropriate connections are made as shown in Figure 1.
Step 4
Determine the molecular formula of propanone.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The molecular formula of propanone is C₃H₆O, indicating three carbon atoms, six hydrogen atoms, and one oxygen atom.
Step 5
Why does propanone have a low boiling point?
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Propanone has a low boiling point because the intermolecular forces are weak, allowing the molecules to separate easily.
Step 6
Explain why graphite is: a good electrical conductor.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Graphite is a good electrical conductor because it has delocalised electrons that can move freely between layers, allowing electric charge to flow. The structure consists of layers of carbon atoms bonded by covalent bonds, with the delocalised electrons moving through these layers.
Graphite is soft and slippery because the layers can slide over each other easily due to the weak intermolecular forces between the layers, resulting in a slippery texture.
