Bonding

Question 1

What is ionic lattice?

Answer 1

-giant structures that are held together by electrostatic forces between the positive and negative charges

Question 2

How many bonds in diamond does each carbon atom make?

Answer 2

-4

Question 3

Why does diamond not conduct electricity?

Answer 3

-because there is no delocalised electron

Question 4

Why is diamond hard?

Answer 4

-because it has lots of strong covalent bonds

Question 5

How many bonds in graphite does each carbon atom make?

Answer 5

-3

Question 6

Why is graphite soft?

Answer 6

-The carbon atoms form layers of hexagonal rings, with weak intermolecular forces keeping the layers together.
The layers can easily slide over one another, so graphite is very soft.
This makes graphite useful as a lubricant and as pencil ‘lead’

Question 7

Why can graphite conduct electricity?

Answer 7

-each carbon atom forms 3 bonds therefore has a delocalised electron from every carbon atom

Question 8

What are fullerenes?

Answer 8

• molecules of carbon atoms that take up hollow structures. Their structure is usually carbon atoms arranged in hexagonal rings, but pentagonal and heptagonal carbon rings can also be found

Question 9

What is buckminsterfullerene?

Answer 9

• first fullerene that was discovered.
• spherical shape and its formula is C60.
• a simple molecule because of its fixed size

Question 10

What are some uses of spherical fullerenes?

Answer 10

• catalysts
• lubricants
• vehicles to transport drugs into bodies

Question 11

What is a carbon nanotube?

Answer 11

-cylindrical fullerenes

Question 12

Why are cylindrical fullerenes strong?

Answer 12

• strong covalent bonds between carbon atoms

- can conduct electricity

Question 13

What are some uses of cylindrical fullerenes?

Answer 13

• in electronics.
• In nanotechnology.
• For strengthening materials (e.g. tennis racket frames)