Edexcel IAL Chemistry AS 8.18 Group 1 and 2 experimental procedures
Edexcel IAL Chemistry AS 8.18 Group 1 and 2 experimental procedures
Specify the cleaning and heating method, record the exact flame or gas observation and pair each gas with its positive test before judging procedural limitations.
How this is tested
- Describe flame testing with hydrochloric acid, a clean support and a non-luminous flame.
- Identify NO₂, O₂ or CO₂ from colour, splint, limewater or acidity evidence.
- Compare thermal decomposition using controlled heating, gas tests and apparatus limitations.