Reactions of chlorine gas with sodium, aluminium, magnesium and iron wool.
THIS EXPERIMENT MUST BE CARRIED OUT IN A WORKING FUME CUPBOARD
 A steady stream of chlorine is passed over the heated metal.
 There is a vigorous reaction and the metal chloride is obtained.
NOTE
CLEAPSS Hazard Cards recommend that chlorine is made by dropping 5M hydrochloric acid onto sodium chlorate(1) solution.
DANGERS OF CHLORINE
IRRITANT – To the eyes, skin and respiratory system.
May bring on asthma attacks.
TOXIC – if breathed in . May cause severe lung damage.
Alleviate the symptoms by inhaling 1.0M ammonia vapour
Reactions of bromine gas with sodium, aluminium, magnesium and iron wool.
 As bromine liquid readily vapourizes yielding toxic fumes any experiments should be done in a fume cupboard.
 You must use rubber gloves and goggles.
 Have 1.0Msodium thiosulphate available to neutralise any spills.
 Due to the unpredictable nature of the reactions none of these experiments involving bromine can be recommended.