Particles and materials

Explore states of matter, density, atoms and molecules.

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1. 1

   How can the same material have different states?

   Compare moving particles in an idealised solid, liquid and gas.

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2. 2

   What changes when particles are heated?

   Compare particle motion while keeping particle count and container size fixed.

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3. 3

   Can a small object be denser than a big one?

   Change mass and volume separately and compare their ratio.

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4. 4

   What makes one atom a different element?

   Change nucleus and electron counts in a labelled schematic atom.

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5. 5

   How do atoms make different molecules?

   Assemble selected atom counts and compare three molecular models.

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Each discovery includes all five reading levels. Journey progress reflects the checkpoints answered on this browser.

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