11.5    Uses of  Group II Compounds

11.1    of  Group II Compounds

• Some ceramics contain magnesium oxide, MgO and they can be used as:
  1. electrical insulators in industrial electrical cables
  2. a refractory in furnace linings because it has a high melting (However, it cannot be used in furnaces where acid is present due to its basic nature)
  3. in fire-resistant wall boards

• Calcium compounds have many uses, this includes:
  1. calcium carbonate(limestone) to make cement
     – It is roasted in a lime kiln so that it decomposes into calcium oxide, CaO (quicklime). The cement made is mixed with rocks to make concrete.
  2. using calcium hydroxide/oxide/carbonate to treat acidic soil as they react with acids