![Test tubes with colourful liquids](/sites/default/files/styles/resource_card_image_360x300_/public/2021-11/test-tube-with-colourful_liquids.jpg?itok=MEo5D0U_)
Evidence of Chemical Change
Backgrounders
Learn how to tell if a chemical reaction has taken place.
![Cloud model of an atom](/sites/default/files/styles/resource_card_image_360x300_/public/2021-01/cloud_model_atom.jpg?itok=3YgrftL8)
Introduction to the Atom
Backgrounders
Learn about the parts of an atom and its history.
![Cube overflowing with spheres representing particles](/sites/default/files/styles/resource_card_image_360x300_/public/2020-12/cube_filled_with_particles.jpg?itok=bKfAvtCi)
Introduction to the Particle Theory of Matter
Backgrounders
Learn about how the Particle Theory helps us understand matter.
![General Motors Place](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/General_Motors_Arena_Vancouver_BC.jpg?itok=NGrlYeqn)
Keeping the Rink on Ice
STEM Explained
Learn about the chemistry of ice skating rinks, and the technology & engineering that lets us enjoy them indoors as well as outside.