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Pure Substances and Mixtures; Separation of Mixtures — CHEMISTRY STD 6 — Question

ICSE BoardEnglish MediumSTD 6CHEMISTRYPure Substances and Mixtures; Separation of Mixtures2 Marks
Question
Why do we need pure substances?
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Answer

We need pure substances because of the following reasons:
  1. A pure substance has a fixed melting and fixed boiling point.
  2. A pure substance has its characteristic taste, colour, and odour.
  3. Pure substances can not be broken further into more simple substances by any physical means.

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