Bonding Models

Question 1

Dot and cross diagram( positives )

Answer 1

Show how electrons are shared
Explains how we get formula

Question 2

Dot and cross diagram( negatives )

Answer 2

Implies electrons differ from different atoms
Does not show shape of molecule
Does not show relative size of atoms

Question 3

Ball and stick ( positives )

Answer 3

Shows which atoms joined together
Can show shape (3D ball + stick)
Shows formula

Question 4

Ball and stick ( negatives )

Answer 4

Does not always show shape
Implies atoms held together with sticks
Does not show relative size of atoms

Question 5

3D space filling model ( positives )

Answer 5

Shows relative size of atoms
Shows shape of molecules

Question 6

3D space filling model (negatives )

Answer 6

Does not explain how bonds are formed
Does not show the number of bonds

Question 7

Ionic model ( positives)

Answer 7

Shows lattice structure
Explains why the structure conducts electricity

Question 8

Ionic model ( negatives )

Answer 8

Does not show ions vibrating