Metals and their Compounds 2

CHEMISTRY  SSS3 First term


Metals and their Compounds 2

Performance objectives

Students should be able to:

  1. Explain the properties of alkaline earth metals
  2. Explain the extraction of calcium.
  3. State the properties and uses of calcium.
  4. Explain the extraction of aluminium.
  5. Give at least three uses of aluminium


Alkaline earth metals

These are group II elements and they include beryllium, magnesium, calcium, strontium, barium, radium. They are divalent elements because they have two valence electrons and they ionize by donating two valence electrons.

Mg ----à Mg2+ + 2e-

They are reducing agents and they form electrovalent compounds. Beryllium does not react with cold water or steam, magnesium reacts with only steam while calcium reacts with cold water, liberating.... View More

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