A Black Solid

This problem-solving activity, from the Royal Society of Chemistry, asks students to work in groups to devise experiments to identify a black solid sample, using chemicals and apparatus available in the laboratory. An example of some tests that the students can carry out such as flame tests and reaction with acids are provided.

Students work in groups to devise three or four different methods, test each one and decide which is best. Students need to discuss the problem and decide how they are going to carry out the investigation. Afterwards they prepare a presentation to give to their peers. Some prior knowledge of the properties of dilute acids, the reduction of metal oxides and the reactivity series is needed, though not in depth as students are encouraged to consult textbooks and data books during the exercise.

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This resource is part of Royal Society of Chemistry

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