4ESO Física i Química , ARTICLE 72 : ELEMENTS VALENCES.

 - Here you have the link to see the picture  in a bigger view :

  

  BIG FOTO

- Studying oxidation number of aluminium and boron group :

   ALUMINUM COMPOUNDS

   ALUMINUM OXIDE: IONIC COMPOUND, LEWIS STRUCTURE AND FORMULA

   ALUMINUM OXIDE SIGNIFICANCE CHEMISTRY.

   ALUMINUM EXTRACTION, BAUXITE.

  - HOMEWORK FOR FRIDAY 4-11-16 :

    Read ,study and make all exercices from page 170 and 171, and finish watching last videos from this article 72, and study elements valences!!.