REACTIONS WITH WATER

• HOW DOES REACTIVITY WITH WATER CHANGE DOWN GROUP 2?

  increases
• WHAT TYPE OF REACTION OCCURS WHEN GROUP 2 ELEMENTS REACT WITH WATER?

  redox
• GENERAL FORMULA FOR GROUP 2 REACTIONS WITH WATER (M representing any G2 element)?

  M (s) + 2H2O (l) -> M(OH)2 (aq) + H2 (g)
• Mg REACTION WITH COLD WATER?

  reacts slowly
• Mg REACTION WITH STEAM?

  reacts rapidly to produce MgO (alkaline oxide) + H2
• WHAT IS MgOH USED IN?

  indigestion remedies
• WHAT IS USED IN INDIGESTION REMEDIES?

  MgOH
• Ca REACTION WITH WATER?

  reacts similarly to Mg but more vigorously
• WHAT IS CaOH?

  slaked lime
• WHAT IS CaOH USED FOR?

  treat acidic soil
• WHAT IS USED TO TREAT ACIDIC SOIL?

  CaOH (slaked lime)
• Sr/Ba REACTION WITH WATER?

  reacts similarly to Ca but more vigorously