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 seems to destroy an oxygen atom. How do you fix it?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 decompositionProcessA green powder is heated and turns black. What kind of reaction is this, and how is it different from burning?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