1. Some Chemistry of the Periodic Table
AH Chemistry, Unit 1(c)

3. Trends across periods 2 and 3
Melting and boiling points
Electrical conductivity
Behaviour with water

4. For discussion / investigation…
Lithium chloride
Sodium chloride
Magnesium chloride
Aluminium chloride
Magnesium oxide
Aluminium oxide
Sulphur dioxide

5. Ionic hydrides Write the chemical symbol for the hydride ion.
Write the chemical formula for:
Sodium hydride
Aluminium hydride
Write chemical equations for the reaction of the above with water.

6. In what state are hydrides at room temperature?
Does the hydride ion act as an oxidising or reducing agent in chemical reactions?
Draw a diagram to illustrate the electrolysis of molten aluminium hydride.
Write ion-electrons to illustrate what is happening.
Write a redox equation for the reaction.