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Explore trends across periods and behaviors of selected chlorides and oxides, investigate hydride reactions, their symbols and formulas, and electrolysis.
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Some Chemistry of the Periodic Table AH Chemistry, Unit 1(c)
Trends across periods 2 and 3 • Melting and boiling points • Electrical conductivity • Behaviour with water
For discussion / investigation… • Lithium chloride • Sodium chloride • Magnesium chloride • Aluminium chloride • Magnesium oxide • Aluminium oxide • Sulphur dioxide
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.
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.