Qualitative analysis marks go to careful observation and precise wording. Test an unknown salt in virtual test tubes and watch what happens, then record it the way examiners want and identify the ions. A new unknown every time, with the same tests as the notes printed in the exam paper.
This trainer needs JavaScript.
The colour, the word “precipitate”, and what happens in excess: for example “white precipitate, soluble in excess, giving a colourless solution”.
Both the test and the result: “turns damp red litmus paper blue”, not just “litmus”.
An ion named only when the observations support it. Use the qualitative-analysis notes printed in the paper.
A fresh portion of the solution for each new test, so one reagent does not interfere with the next.
The marking follows the conventions in published Cambridge mark schemes. The experiments, readings and wording on this page are our own.