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Carbon atoms are used to make nanotubes - AQA - GCSE Chemistry - Question 5 - 2014 - Paper 1
Question 5
Carbon atoms are used to make nanotubes. Carbon atoms in a nanotube are bonded like a single layer of graphite. Figure 5 shows the structure of a single layer of g... show full transcript
Worked Solution & Example Answer:Carbon atoms are used to make nanotubes - AQA - GCSE Chemistry - Question 5 - 2014 - Paper 1
Step 1
Suggest why carbon nanotubes are used as lubricants.
Answer
Carbon nanotubes can slide over each other due to their structure, allowing for smooth movement and reducing friction. This sliding capability is attributed to the absence of strong covalent bonds between the individual nanotubes, enabling them to roll easily over one another.
Step 2
Explain why graphite can conduct electricity.
Answer
Graphite conducts electricity because it has delocalised electrons. These delocalised electrons are free to move throughout the structure of graphite, allowing them to carry charge efficiently, which is essential for electrical conductivity.