Period 3

• Magnesium hydroxide is a weak base (pH 9-10)
• Aluminium and Silicon oxides do not react with water
• Mg reacting with cold water is slow
• Sodium reacting with water is very vigorous
• NA2O Sodium Oxide, vigorous
• Al2O3 aluminium oxide, slow(faster if powdered)
• P4O10 Phosphorus oxide, spontaneously combusts
• MgO MAGNESIUM OXIDE, VIGOROUS
• SiO2 Silicon dioxide, slow
• SO2 Sulfur dioxide, burns steadily