MrBadmusAI

Year 7 · Summer Second Half

Chemistry

3 lessons from 1 unit.

Unit C3 · lessons 5 to 7 of 7

Mixtures and separation

Almost nothing you meet is one pure substance. This unit is about telling what is in a sample, getting the parts back out again, and the one test that settles whether something is pure when looking at it cannot.

  1. 05DistillationProcessEvaporation throws the water away. What if the water is the thing you cannot live without?Open this lesson
  2. 06ChromatographyProcessEverything in the mixture is dissolved, and all of it is the same colour. How do you separate substances that will not sit still to be picked apart?Open this lesson
  3. 07Proving something is pureInvestigationSomeone hands you a white powder and tells you it is pure. Believing them is not chemistry — so what measurement would make them prove it?Open this lesson

Back to all three sciences this half term The whole KS3 Chemistry course