1. Melting and boiling points of materials change with presence of impurities in them.
Similarly boiling and freezing points of liquids also change with change in atmospheric
pressure. Where can we see this phenomenon in real life. Scientists have also utilised this
variation in scientific research. Find out examples of these and list them.
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The presence of impurities in a substance results in a lower melting point due to a process called melting point depression. ... However, the presence of impurities weakens the lattice, making it less stable. As a result, the compound melts at a lower temperature.
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