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.
Q2491920191129.png
(a) What are the physical states of the substances at points W and Y.
(b) Explain why the temperature remains constant between points B and C.

  

Answers


Maurice
(a) W – Solid
Y-Liquid

(b) The heat supplied is used to overcome intermolecular forces therefore causing the solid to melt.
maurice.mutuku answered the question on September 19, 2019 at 08:33


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