Year 8 · Autumn Second Half
Chemistry
4 lessons from 2 units.
Unit C4 · lesson 5 of 5
Some changes make something new and some only move what was already there. This unit is about telling which is which, seeing what a reaction does to the atoms underneath, and learning the two ways chemists write one down.
Unit C5 · lessons 1 to 3 of 5
Most of the reactions you will ever meet are one of a small number of kinds. This unit is about four of them — what each one does, what it needs, and how to tell which one you are looking at when nobody says.
- 05Symbol equations and balancingModelWritten straight out, the equation for making water destroys an oxygen atom. Fixing it teaches you the one number in chemistry you are allowed to change.Open this lesson
- 01CombustionProcessA collar of metal at the bottom of a burner decides whether the flame is clean and hot or dirty, cool and poisonous. Why should a hole in the side matter that much?Open this lesson
- 02Thermal decompositionProcessEvery reaction so far has joined things together. What kind of reaction takes one substance and gives you two?Open this lesson
- 03OxidationProcessA flash of burning magnesium and twenty years of a rusting gate are the same reaction. What is it, and what does it need?Open this lesson
Back to all three sciences this half term The whole KS3 Chemistry course