Allotropes (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
ShowHide
Practise the questions
15 questions from this quiz
What are allotropes?
What are allotropes?
Different physical forms of same element
How many covalent bonds does each carbon atom form in diamond?
How many covalent bonds does each carbon atom form in diamond?
4
Why is diamond the hardest naturally occurring substance?
Why is diamond the hardest naturally occurring substance?
Strong covalent bonds in 3D structure
Why doesn't diamond conduct electricity?
Why doesn't diamond conduct electricity?
No free electrons available
What is the melting point of diamond?
What is the melting point of diamond?
How many covalent bonds does each carbon atom form in graphite?
How many covalent bonds does each carbon atom form in graphite?
3
Why is graphite soft and slippery?
Why is graphite soft and slippery?
Weak forces between layers allow sliding
Why does graphite conduct electricity?
Why does graphite conduct electricity?
Delocalised electrons move freely
What is graphene?
What is graphene?
A single layer of graphite
In what year was graphene discovered?
In what year was graphene discovered?
2004
How many carbon atoms does buckminsterfullerene contain?
How many carbon atoms does buckminsterfullerene contain?
60
What is the melting point of buckminsterfullerene?
What is the melting point of buckminsterfullerene?
What is buckminsterfullerene's solubility?
What is buckminsterfullerene's solubility?
Insoluble in water, soluble in organic
What are carbon nanotubes?
What are carbon nanotubes?
Tubes of graphene
Do carbon nanotubes conduct electricity?
Do carbon nanotubes conduct electricity?
Yes, they have delocalised electrons