Development of the atomic model
Major phases in the history of theories and views about the structure of the atom.
We observe whether a razor blade can float on the surface of different liquids.
Separating mixtures if one of the substances dissolves in water.
In this video we are experimenting with food colourings.
Large-scale ammonia production requires high temperature and pressure and the presence of...
The dissolution of zinc in hydrochloric acid produces hydrogen gas.
An exercise about the groups and structure of oxo compounds.
In benzene there are sigma bonds and delocalised pi bonds between carbon atoms.
When heated, powdered sulphur reacts with powdered zinc, releasing heat.