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JAMB Chemistry 2006 Question 28

Question 28

Water

Water has the ability to dissolve almost all substances because its molecule has a structure with

  1. A.one positive end and one neutral end
  2. B.one positive end and one negative end
  3. C.two negative ends
  4. D.two positive ends
Show the answer and explanation

Answer: B (one positive end and one negative end)

Explanation

Water is a polar molecule: the oxygen end is partly negative and the hydrogen end partly positive, so it attracts and surrounds ions and polar molecules.