3. Bonding, Structures and Properties

Question 1

What type of atom are molecules made out of?

Answer 1

Non-metal atoms

Question 2

What are atoms held together by in molecules?

Answer 2

Covalent bonds

Question 3

What are covalent bonds?

Answer 3

Bonds between atoms which share electrons

Question 4

What are diatomic molecules?

Answer 4

Molecules which contain only two atoms

Question 5

What are the diatomic elements?

Answer 5

Iodine
Hydrogen
Nitrogen
Bromine
Oxygen
Chlorine
Fluorine

(I Have No BRight Or CLever Friends)

Question 6

What are the molecule shapes?

Answer 6

N
H H H = Pyramidal (Ammonia)

 H
 C             = Tetrahedral (Methane) H   H   H

 O    H    H     = Bent / V-Shaped (Water)

H F = Linear (Hydrogen Fluoride)

Question 7

What properties does a covalent molecule have?

E.g. Water

Answer 7

Low melting/ boiling points

Insoluble

Does not conduct electricity

Question 8

What properties does a covalent network have?

E.g. Diamond

Answer 8

Very high melting/ boiling point

Insoluble

Does not conduct

Question 9

What properties does an ionic lattice have?

E.g. Salt

Answer 9

High melting/ boiling point

Soluble

Conducts as liquid