Group 1 Group 2 Group 3 Group 4
They are lighter than air They are electric They are magnetic They are very reactive
Brighter Hotter More reactive Less reactive
Red Lilac Purple Pink
Sodium floats and fizzes Sodium sinks and fizzes Sodium sinks and the water turns red Sodium sinks and the water turns yellow
A fuse for dynamite A lining for water tanks A flavouring and food preservative A building material
Oxygen, chlorine and sulphuric acid Hydrogen, chlorine and sodium hydroxide Carbon dioxide, chlorine and hyrochloric acid Hydrogen, oxygen and bleach