MrBadmusAI

Year 7 · Spring First Half

Chemistry

4 lessons from 1 unit.

Unit C2 · lessons 1 to 4 of 6

Atoms, elements and compounds

Everything there has ever been is built from about a hundred kinds of atom. This unit is about how you tell one kind from another, what happens when they join, and the one thing that never changes no matter what you do to them.

  1. 01The atom: Dalton's modelModelPeople tried to turn lead into gold for fifteen hundred years and never once managed it. What would have to be true for that to be impossible?Open this lesson
  2. 02ElementsClassifyEverything there has ever been is built from about a hundred kinds of atom. So how do you tell whether the thing in front of you is one of them?Open this lesson
  3. 03CompoundsContrastIron and sulfur in a dish. Same two elements before and after heating — and afterwards the magnet is useless. What changed?Open this lesson
  4. 04Chemical symbolsClassifyA chemist in Lagos, one in Osaka and one in São Paulo write the same thing for salt. None of them writes "salt".Open this lesson

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