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Pure substances and purity tests

Pure substances and purity tests

In chemistry, a pure substance is one element or one compound only. If another substance is mixed in, even in a small amount, the sample is impure.

Separation and purification Lesson

  1. IGCSE
  2. /Chemistry
  3. /Separation and purification

Step-by-step lessons covering CIE IGCSE Chemistry Separation and purification for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended), plus Paper 5 or Paper 6 format. Build a solid grasp of atomic structure, bonding and the mole concept early, since these underpin almost every other topic, then move on to the more calculation-heavy quantitative and organic chemistry content.

Lessons