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Paper 6Alternative to PracticalPractical3 marks
Identifying cations using a flame test.
Method
Flame Test Procedure
To identify metal cations, a flame test is performed by heating a small sample of the metal salt on a clean wire loop in a Bunsen burner flame. The color of the flame is observed and recorded.
| Cation | Flame Color |
|---|---|
| Lithium (Li⁺) | Crimson |
| Sodium (Na⁺) | Bright yellow |
| Potassium (K⁺) | Lilac |
| Calcium (Ca²⁺) | Orange-red |
| Barium (Ba²⁺) | Green |
| Copper(II) (Cu²⁺) | Blue-green |
- a[3]
Describe the procedure for conducting a flame test, including any important safety precautions.
Aim for approximately 3 distinct marking points.
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