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SS3: CHEMISTRY - 2ND TERM

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  1. Quality of petrol (Octane Number)| Week 1
    1 Topic
    |
    1 Quiz
  2. Natural Gas | Week 2
    3 Topics
    |
    1 Quiz
  3. Introduction to Metals | Week 3
    3 Topics
    |
    1 Quiz
  4. The Alkali Metals | Week 4
    4 Topics
    |
    1 Quiz
  5. Alkaline Earth Metals | Week 5
    3 Topics
  6. Aluminium & Tin | Week 6
    2 Topics
  7. Transition Metals of the First Series | Week 7
    4 Topics
  8. Ethical, Legal & Social Issues | Week 8
    3 Topics
  9. Fats & Oils - Soaps & Detergents | Week 9
    4 Topics
  10. Giant Molecules | Week 10
    6 Topics



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Alkali Metals

The group 1 elements are called alkali metals. Except for hydrogen, all the group 1 elements are metals.

They are Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).

They ionize by the loss of one electron to form a univalent positive ion. They are very good reducing agents. Alkali metals are soft and light with low melting points. The first ionization energy decreases down the group of the elements.

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