Level 3 · Science S3.5

Particles

Everything is made of tiny particles, and how they move explains a great deal.

Picture the particles in a solid, a liquid and a gas. Use them to explain smells, melting, pressure, rails that grow in the heat, dissolving and density.

Start readingS3.5.1 The particle model

8 chapters. Your place is kept on this device only.

You are ready for this book if

You can sort ten things at home into solids, liquids and gases.

Contents

  1. 1The particle model, readunderstood
  2. 2Evidence for particles, readunderstood
  3. 3Changes of state, readunderstood
  4. 4Diffusion and temperature, readunderstood
  5. 5Gas pressure, readunderstood
  6. 6Expanding and shrinking, readunderstood
  7. 7Dissolving and solutions, readunderstood
  8. 8Density, readunderstood

Keep it, print it, pass it on

For parents and teachers

For learners who can read a page alone and use the four operations. In many schools this fits children of about 11 to 13, and older learners can use it too. Activities use water, cups, jars, stones, salt and sugar. Any heating, and any hot water, needs a grown up. A learner can work alone: every exercise has its answer and the reason for it.

Strand: Matter. Written and drawn by attnom. Free to read, print and share.