Year 8 · Summer First Half
Chemistry
4 lessons from 2 units.
Unit C6 · lesson 7 of 7
An acid and an alkali are not things you can see, weigh or smell. They are things a substance does — to a dye, to a metal, to each other — and this unit is about reading those behaviours, predicting them, and using them on purpose.
Unit C8 · lessons 1 to 3 of 7
There are about ninety elements that occur on Earth, and for most of the nineteenth century nobody could say why some of them behaved alike. This unit is about the arrangement that answered it — what a column means, what a row means, and how a table can let you describe an element nobody has found yet.
- 07CatalystsModelA spatula of black powder turns a bottle that has been sitting still for a year into a reaction that is over in twenty seconds. Weigh the powder afterwards and none of it has gone.Open this lesson
- 01Metals and non-metalsContrastTwo grey solids, both dull, both heavy, and both of them conduct electricity. One is a metal and one is not — so which single test tells them apart?Open this lesson
- 02Mendeleev and the table that predictedModelMendeleev sorted sixty-three elements into a table that chemists still use. What did he do that nobody before him had done?Open this lesson
- 03Groups and periodsModelWhich tells you more about an element: the row it sits in, or the column?Open this lesson
Back to all three sciences this half term The whole KS3 Chemistry course