Structure and Bonding

Question 1

What is a Giant Ionic Lattice

Answer 1

negative ion surrounded by positive ions

Question 2

Why do ionic compounds/giant ionic lattice’s have a high melting/boiling point?

Answer 2

+ and - ions create electrostatic forces (ionic bonds)

Question 3

ionic compounds cannot…….

Answer 3

conduct electricity

Question 4

Covalent bonding takes place between…….

Answer 4

non-metals

Question 5

In diamond each carbon atom forms _ covalent bonds

Answer 5

4

Question 6

Diamond cannot……

Answer 6

conduct electricity (no delocalised electrons)

Question 7

graphite forms _ covalent bonds

Answer 7

3 (hexagonal rings)

Question 8

why can graphite conduct electricity?

Answer 8

delocalised electrons

Question 9

What is graphene?

Answer 9

single layer of graphite

Question 10

Shape of fullerene rings?

Answer 10

hexagonal (4 carbon atoms)

Question 11

advantage of carbon nanotubes?

Answer 11

high tensile (can be streached)

Question 12

use of carbon nanotubes?

Answer 12

reinforce materials (tennis rackets)

Question 13

What is a polymer

Answer 13

thousand’s of molecules joined together (monomers)

Question 14

monomer has……..

Answer 14

double covalent bonds

Question 15

Why can metals be bent or shaped?

Answer 15

layers of atoms are able to slide over each other.

Question 16

What is an alloy

Answer 16

mixture of metals (distorts layers = harder to slide over each other)