1. METAL OXIDES & HYDROXIDES

2.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+) METAL OXIDES & HYDROXIDES

3.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble. METAL OXIDES & HYDROXIDES

4.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble.  EG – Lithium oxide in water: METAL OXIDES & HYDROXIDES

5.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble.  EG – Lithium oxide in water: Li 2 O + H 2 O  LiOH METAL OXIDES & HYDROXIDES

6.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble.  EG – Lithium oxide in water: Li 2 O + H 2 O  LiOH Li 2 O + H 2 O  2LiOH METAL OXIDES & HYDROXIDES

7.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble.  EG – Lithium oxide in water: Li 2 O + H 2 O  LiOH Li 2 O + H 2 O  2LiOH  Eg – Calcium hydroxide forms when calcium oxide is added to water METAL OXIDES & HYDROXIDES

8.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble.  EG – Lithium oxide in water: Li 2 O + H 2 O  LiOH Li 2 O + H 2 O  2LiOH  Eg – Calcium hydroxide forms when calcium oxide is added to water CaO + H 2 O  Ca(OH) 2 METAL OXIDES & HYDROXIDES

9.  These are mostly insoluble (can’t be dissolved in water) EXCEPT! -Those containing Sodium (Na+) -Those containing Potassium (K+)  Calcium oxide and calcium hydroxide are moderately soluble.  EG – Lithium oxide in water: Li 2 O + H 2 O  LiOH Li 2 O + H 2 O  2LiOH  Eg – Calcium hydroxide forms when calcium oxide is added to water CaO + H 2 O  Ca(OH) 2 * A saturated solution of calcium hydroxide is called limewater. METAL OXIDES & HYDROXIDES

10.  Metal oxides and metal hydroxides have the same chemical properties. CHEMICAL PROPERTIES

11.  Metal oxides and metal hydroxides have the same chemical properties.  Eg – The reactions of magnesium oxide and magnesium hydroxide with HCl : - Magnesium Oxide + Hydrochloric Acid  Magnesium Chloride + water CHEMICAL PROPERTIES

12.  Metal oxides and metal hydroxides have the same chemical properties.  Eg – The reactions of magnesium oxide and magnesium hydroxide with HCl : -Magnesium Oxide + Hydrochloric Acid  Magnesium Chloride + water MgO + HCl  MgCl 2 + H 2 O CHEMICAL PROPERTIES

13.  Metal oxides and metal hydroxides have the same chemical properties.  Eg – The reactions of magnesium oxide and magnesium hydroxide with HCl : -Magnesium Oxide + Hydrochloric Acid  Magnesium Chloride + water MgO + HCl  MgCl 2 + H 2 O MgO + 2HCl  MgCl 2 + H 2 O CHEMICAL PROPERTIES

14.  Metal oxides and metal hydroxides have the same chemical properties.  Eg – The reactions of magnesium oxide and magnesium hydroxide with HCl : -Magnesium Oxide + Hydrochloric Acid  Magnesium Chloride + water MgO + HCl  MgCl 2 + H 2 O MgO + 2HCl  MgCl 2 + H 2 O  Magnesium Hydroxide + Hydrochloric Acid  Magnesium Chloride + water CHEMICAL PROPERTIES

15.  Metal oxides and metal hydroxides have the same chemical properties.  Eg – The reactions of magnesium oxide and magnesium hydroxide with HCl : -Magnesium Oxide + Hydrochloric Acid  Magnesium Chloride + water MgO + HCl  MgCl 2 + H 2 O MgO + 2HCl  MgCl 2 + H 2 O  Magnesium Hydroxide + Hydrochloric Acid  Magnesium Chloride + water Mg(OH) 2 + HCl  MgCl 2 + H 2 O CHEMICAL PROPERTIES

16.  Metal oxides and metal hydroxides have the same chemical properties.  Eg – The reactions of magnesium oxide and magnesium hydroxide with HCl : -Magnesium Oxide + Hydrochloric Acid  Magnesium Chloride + water MgO + HCl  MgCl 2 + H 2 O MgO + 2HCl  MgCl 2 + H 2 O  Magnesium Hydroxide + Hydrochloric Acid  Magnesium Chloride + water Mg(OH) 2 + HCl  MgCl 2 + H 2 O Mg(OH) 2 + 2HCl  MgCl 2 + 2H 2 O CHEMICAL PROPERTIES

17.  In these chemical reactions, the acid is neutralised by the metal oxide or metal hydroxide. CHEMICAL REACTIONS

18.  In these chemical reactions, the acid is neutralised by the metal oxide or metal hydroxide.  Solid magnesium chloride will form if the solution is evaporated. CHEMICAL REACTIONS

19.  In these chemical reactions, the acid is neutralised by the metal oxide or metal hydroxide.  Solid magnesium chloride will form if the solution is evaporated.  The Mg ions, come from the magnesium oxide/hydroxide, and the chloride ions, come from the hydrochloric acid. CHEMICAL REACTIONS

20. SubstanceUses Aluminium OxideProduction of aluminium metal Sodium Hydroxide (also called caustic soda) Absorbs CO 2 Soap making, oven and concrete cleaning Calcium Hydroxide (Limewater) Test for CO 2 In making bleaching powder ‘Whitewash’ for buildings USES