Year 8 · Summer Second Half
Chemistry
4 lessons from 1 unit.
Unit C8 · lessons 4 to 7 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.
- 04Group 1 — the alkali metalsModelSodium loses its shine within seconds of being cut. What is going on, and what does it tell you about the whole group?Open this lesson
- 05Group 7 — the halogensContrastGroup 1 got fiercer the further down you went. Do the elements in group 7 follow the same pattern?Open this lesson
- 06Group 0 and why groups existModelArgon is one per cent of the air and has been going in and out of human lungs for as long as there have been lungs. Chemists analysed air for a century and missed it. How do you miss an element that common?Open this lesson
- 07Metal and non-metal oxidesContrastBurn a metal and burn a non-metal, then drop each product into water. What decides which way the pH goes?Open this lesson
Back to all three sciences this half term The whole KS3 Chemistry course