Covaleng Bonding

Question 1

Sodium chloride

Answer 1

Crystalline, solids ( high melting points )
Conduct electricity as liquids
Insulators as solids ( ions can’t move )

Question 2

Carbon dioxide

Answer 2

Gas ( low melting & boiling points )

Never conducts

Question 3

What is covalent bonding

Answer 3

A shared pair of electrons to gain an outer shell

Question 4

Properties of covalent materials:

Simple molecular

Answer 4

Doesn’t conduct electricity

Low melting & boiling point

Question 5

Properties of covalent materials:

Giant molecular

Answer 5

Insoluble in water
Doesn’t conduct electricity
Highly melting & boiling point
Lattice structure

Question 6

What is a polymer

Answer 6

A large molecule containing chains of carbon atoms

Question 7

Properties of polythene

Answer 7

They are made from joining together many smaller carbon chains together

The longer the chain is, the more the melting z& boiling point will increase higher

The structure will become longer because there are more intermolecular bonds