Chem C

Question 1

what is diamond made from

Answer 1

carbon

Question 2

how do carbon atoms in diamond bond

Answer 2

each carbon atom bonds with 4 other carbon atoms in a covalent bond

Question 3

diamond melting point

Answer 3

diamond has a very high melting point as a lot of energy is need to break the millions of strong covalent bonds in the giant structure

Question 4

diamond electrical conductivity

Answer 4

does not conduct electricity as it has no free electrons

Question 5

diamond strength

Answer 5

very strong as it has millions of covalent bonds in a giant structure

Question 6

what is silicon dioxide

Answer 6

made from silicon and oxygen has the exact same strucutre and properties as diamond

Question 7

what is graphite made from

Answer 7

carbon

Question 8

how does graphite bond

Answer 8

each carbon atom covalently bonds with 3 others. The 4th one is delocalised to form layers of carbon.

Question 9

graphite melting point

Answer 9

high melting point as lots of energy is needed to break down strong covalent bonds in giant structure.

Question 10

graphite electrical conductivity

Answer 10

able to conduct electricity due to delocalised electron which can carry electrical current through the material

Question 11

nanoscience uses

Answer 11

medicine, electronics, sunscreen

Question 12

how do fullerenes bond

Answer 12

hexagonal rings of carbons

Question 13

buckministerfullerene

Answer 13

C60 and is the first fullerene to be discovered

Question 14

use of buckminister

Answer 14

drug delivery

Question 15

bonding of nanotubes

Answer 15

cylinercial fullerenes

Question 16

use of nanotubes

Answer 16

strenghtening materials such as tennis rackets

Question 17

polymers bonding

Answer 17

large molecules made up of covalently bonded smaller molecules

Question 18

state of polymer at room temp

Answer 18

solid

Question 19

use of polymers

Answer 19

plastics