OUTCOME
By the end of the lesson you will recognise that electrons have specific energy levels within the atom and that these levels can be identified by the atomic specta of an element. You will be able to identify the different ways light is made and how these are related to the acceleration of electrons
Emission and absorption spectra are produced when the electrons move between energy levels in an atom
De Broglie's model can be used to explain the quantised nature of emission and absorption spectra as the electrons form standing waves of only whole wavelength patterns
LEARNING TASKS
Explain
Use you understanding of resonance to explain why de Broglie's theory effectively explained the discrete energy levels of an electron in an atom.
Explore and Elaborate
Investigate the PhET energy levels of hydrogen
Evaluate
Ex 12.3
DPQs 2.10-15, 2.19