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Courses

Teacher-curated, self-paced courses. Looking for a guided sequence through a full topic? See Learning Paths.

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1 course
Light, Spectra and the Bohr Model
Chemistry · High School (11–12) · Light, Atomic Spectra and the Bohr Model
FreeCh 2 · 2/4

Heat an element in a flame, and it gives out its own colours. Hydrogen gives a few sharp lines, and not a smooth rainbow. In this course we learn how light behaves as a wave and as a stream of particles, how the lines of hydrogen are counted, and how Bohr explained them with energy levels, with numbers that you can check.

4Lessons12Problems2Python Labs1Question Set1Mock Test
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