Performing a potassium flame test
Numéro d’image : 11520459
| Performing a flame test (blue) on a potassium compound. A flame test is a simple way to test for the presence of certain metals in a compound. A small amount of the sample is placed on the end of a platinum wire and held in a Bunsen flame. Some metals can be detected by the colour of flame produced. The colour of the flame is caused by the fluorescence of the metal ions within it; the compound is ionised by the heat and the excited metal ions give out light of a characteristic wavelength or colour. A platinum wire is used as it does not give a flame test colour of its own | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Mason, Jerry |
| Taille de l’image : | 2953 px × 2991 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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