1. What are allotropes?

a) Atoms with the same atomic number but different mass numbers
b) Atoms with the same mass number but different atomic numbers
c) Different forms of the same element
d) Compounds formed by mixing together three different types of metals

2. Fullerenes are allotropes of which element?

a) Titanium
b) Carbon
c) Lead
d) Gold

3. What is the name given to the fullerene molecule consisting of 60 carbon atoms arranged in a football like structure?

a) Carbon-60
b) Fullerene-60
c) Buckyball-60
d) Buckminsterfullerene

4. The diameter of a carbon nanotube is about 10 times smaller than the width of a human hair.

5. Buckyballs consist of football like structures which consist mainly of a series of 5-sided and 6-sided linked together. .

6. Carbon nanotubes are known for their high............?

a) Tensile strength
b) Melting points
c) Chemical reactivity
d) Boiling points

7. Why can carbon nanotubes conduct electricity?

a) They have strong covalent bonds
b) Each carbon atom only form 3 covalent bonds leaving one delocalised electron
c) They have weak intermolecular bonds
d) They readily form hydrogen bonds with other nanotubes

8. Which of the following is a potential medical use for buckyballs?

a) To deliver drug molecules to attack cancer cells in the human body
b) As a lubricant to relieve joint pain in the human body
c) To help conduct nerve impulses in patients with diabetes
d) As a structural material in body implants

9. In a carbon nanotube each carbon atom will form covalent bonds.

10. Which of the following is not a shape formed by fullerene molecules?

a) Hollow spheres
b) Long thin hollow tubes
c) Flat sheets
d) Ellipsoid (squashed spheres)