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Chemistry · 12-15

Chemistry from particles to reactions

Ages 12–15: atomic structure, periodic patterns, bonding, equations, amount of substance, and acids and bases.
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6 guided lessons

Short explanations, worked examples, hands-on practice, optional checks, and a note for grown-ups.

  1. 1

    Build an atomic model

    Begin with an overview of “Build an atomic model”. Then learn the main idea, follow an example, and try it yourself.

    14 min
  2. 2

    Use periodic patterns

    Begin with an overview of “Use periodic patterns”. Then learn the main idea, follow an example, and try it yourself.

    14 min
  3. 3

    Explain chemical bonding

    Begin with an overview of “Explain chemical bonding”. Then learn the main idea, follow an example, and try it yourself.

    14 min
  4. 4

    Balance chemical equations

    Begin with an overview of “Balance chemical equations”. Then learn the main idea, follow an example, and try it yourself.

    14 min
  5. 5

    Relate particles, moles, and concentration

    Begin with an overview of “Relate particles, moles, and concentration”. Then learn the main idea, follow an example, and try it yourself.

    14 min
  6. 6

    Reason about acids and bases

    Begin with an overview of “Reason about acids and bases”. Then learn the main idea, follow an example, and try it yourself.

    14 min

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