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CHEMISTRY · 8 EXPLORATION STEPS

Flame tests and atomic spectra

Why does each metal produce a characteristic flame colour, and how can that colour reveal a sample's composition?

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Simulation: Flame tests and atomic spectra▶ Open 3D simulation
YOUR EXPLORATION

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  1. 01

    Explore the experiment

  2. 02

    Clean the platinum wire

  3. 03

    Sodium doublet

  4. 04

    Potassium and cobalt glass

  5. 05

    Energy and wavelength

  6. 06

    Emission and absorption

  7. 07

    Six metals

  8. 08

    Assessment · Identify potassium

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Chemistry8 exploration steps

Factors affecting reaction rate

Why do some reactions finish in seconds while others take a long time? What determines how fast a reaction proceeds?

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Chemistry9 exploration steps

Molecular models of organic compounds

Molecular formulae are drawn on flat paper, but what are the actual three-dimensional shapes? What can a ball-and-stick model reveal?

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