Sodium
Na grey metallic solid; MP 98oC
Fizzes and moves around on the surface of the water. It may catch fire and burns with a yellow flame.
Sodium burns with a yellow (yellow/orange) flame and produces a white powder.
Sodium oxide is an ionic solid; MP 1275oC
Dissolves in water to form a basic solution
Mg silver metallic solid; MP 650oC
Reaction with water
Reacts slowly with cold water to produce magnesium hydroxide and hydrogen
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Reaction with steam
Reacts vigorously with steam to produce magnesium oxide and hydrogen.
Magnesium burns with a bright white flame and produces a white powder of magnesium oxide
Magnesium oxide is an ionic solid; MP 2900oC
It is only slightly soluble, it is a basic oxide.
Magnesium
Aluminium
Aluminium does not react with water.
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Aluminium burns in oxygen with a bright white light
Silicon
Silicon burns with a white flame to produce a white powder.
Phosphorus
Phosphorus burns with a white flame to produce a white powder.
Sulfur
Sulfur burns with a blue flame to produce a choking acidic gas of sulfur dioxide.
Chlorine
Chlorine dissolves in water to give a pale green solution.