The Case of the Vanishing Metal (Chemistry Level 8)
· 7:35 · S1 E11
Episode The Case of the Vanishing Metal (Chemistry Level 8)
We're tracking down missing metal. First we find out where it disappears to in acid. Then we catch metal doing the opposite in plain air, getting heavier, and work out what it stole.
The case is solved: metal is never lost or created, it just swaps partners. You can now say both word equations, name the salt from the acid, describe the pop test, and explain why a dry iron nail doesn't rust.
Sources:
• https://www.savemyexams.com/gcse/chemistry/aqa/18/revision-notes/8-chemical-analysis/8-2-identification-of-common-gases/8-2-1-test-for-hydrogen/ • https://edumentors.co.uk/blog/test-for-hydrogen-gcse-chemistry/ • https://senecalearning.com/en-gb/revision-notes/ks3/science/science-ks3/2-8-1-testing-for-gases • https://www.lemonade-ed.com/year-9/material-world/gas-tests • https://digitalteachers.co.ug/wp-content/uploads/2025/12/Rusting-of-iron.pdf • https://www.fizzicseducation.com.au/150-science-experiments/kitchen-chemistry-experiments/rusty-nail-experiment/ • https://en.wikipedia.org/wiki/Tarnish
Source: Episode 11 - Chemistry Level 8, Chapter 4: Metals and other materials (1/4). Metal reactions (4.1-4.2), about… Sections: 4.1, 4.2 Style: Exam prep Length: 1009 words, 6 min target Generated: 2026-10-25
Links in the notes 7
- https://www.savemyexams.com/gcse/chemistry/aqa/18/revision-notes/8-chemical-analysis/8-2-identification-of-common-gases/8-2-1-test-for-hydrogen/
- https://edumentors.co.uk/blog/test-for-hydrogen-gcse-chemistry/
- https://senecalearning.com/en-gb/revision-notes/ks3/science/science-ks3/2-8-1-testing-for-gases
- https://www.lemonade-ed.com/year-9/material-world/gas-tests
- https://digitalteachers.co.ug/wp-content/uploads/2025/12/Rusting-of-iron.pdf
- https://www.fizzicseducation.com.au/150-science-experiments/kitchen-chemistry-experiments/rusty-nail-experiment/
- https://en.wikipedia.org/wiki/Tarnish
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