C2 : Diamond and Silicon Dioxide

Question 1

What are some properties of giant covalent molecules

Answer 1

. Solids at room temp
. Have millions of strong covalent bonds
. Always have a high melting and boiling point

Question 2

What is diamond formed from

Answer 2

Carbon

Question 3

How much covalent bonds do each carbon atom in diamond form

Answer 3

4

Question 4

Properties of Diamond

Answer 4

. Each carbon atoms forms 4 strong covalent bonds
. Diamonds have a huge number of covalent bonds and have that have to be broken when being melted required a great deal of energy
. Cannot conduct electricity

Question 5

Why can’t diamond conduct electricity

Answer 5

Because there are no free electrons to carry charge (delocalized electrons)

Question 6

Properties of silicon dioxide

Answer 6

. High melting point

Question 7

What is silicon dioxide made of

Answer 7

Silicon
Oxygen