Applied Science BTEC Nationals/Chemical Laboratory Techniques/Qualitative analysis

=Qualitative analysis of inorganic compounds=

The experimental details given here are given in good faith and are believed to be safe and workable methods. However, the authors cannot take responsibility for the consequences of performing these experiments.

The experiments are written for experienced science teaching staff to use as instructions for a supervised class of students. The experiments are not designed for students or inexperienced members of the public to perform without supervision. If you wish to attempt the experiments, ensure that you have completed a legally adequate risk assessment beforehand and that you work within the constraints of the risk assessment.

Flame tests
A small amount of the unknown substance is added to a quiet blue Bunsen flame. A wire loop, cleaned and moistened with concentrated hydrochloric acid, is used for this purpose. Some metals will colour the flame: