How matter is built and behaves — beginning with the atom.
Beta: 3 topics so far. More topics are on the way.
Everything is made of atoms. Knowing the three subatomic particles, where they sit and their charges lets you read the periodic table and predict behaviour.
The periodic table arranges all the known elements in order of atomic number. This unit covers how it is organised into groups and periods, and how position links to an element's properties.
Acids and bases are two families of chemicals with opposite properties. This unit covers the pH scale, how to spot acids and bases, and the salts they make when they react.
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