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The diagram below shows the heating curve of a pure substance. Study it and answer the questions that follow:

      

The diagram below shows the heating curve of a pure substance. Study it and answer the
questions that follow:
Q1101120191103.png
(a) What physical changes are taking place at points X and Z?
(b)Explain what happens to the melting point of sodium chloride added to this substance

  

Answers


Maurice
a) X – Melting point
Z – Boiling point

b) Its melting point is lowered and becomes less sharp due to the introduction of an impurity
maurice.mutuku answered the question on October 11, 2019 at 08:05


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