Flame Colours and Spectroscopy

The discovery by Robert Bunsen which allowed elements to be identified more easily, and even led to the discovery of new ones. Chemistry - Atoms And Bonding - Learning Points. Gustav Kirchoff assembled the first spectroscope - two telescopes were angled at either side of a glass prism. Kirchoff heated a sodium compound, the light emitted entered the first telescope and split up as it passed through the prism. The separated light waves were then viewed in the second telescope - as two orange lines - revealing excited electrons in sodium decreasing in energy. The spectroscope allows further analysis of pure elements and has even lead to the discovery of new elements. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.