Science Class 8
Particulate Nature of Matter
See matter as tiny moving pieces, with gaps — and why melting and squeezing follow.
10 lessons · ~55 min total
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Lessons in this topic
- 0 Start here One picture of tiny moving pieces, and the seven things it explains. · 3 min You are here
- 1 Pieces too small to see Every substance is made of tiny particles that you cannot see. · 5 min
- 2 Gaps between them There is empty space between particles. Dissolved sugar goes into it. · 6 min
- 3 They never stop moving Particles always move, so colours and smells spread. Warmth speeds this up. · 6 min
- 4 Three arrangements Solid, liquid and gas differ in how close the particles are and how they move. · 6 min
- 5 Warming them up Warming makes particles vibrate more. At the melting point a solid becomes a liquid. · 6 min
- 6 Squeezing them Air squeezes into less space. Water hardly does, because it has little space to lose. · 6 min
- 7 What this picture explains Use particles, gaps, pulls and movement to answer everyday questions. · 6 min
- 8 The big picture Seven ideas about tiny moving particles. · 4 min
- 9 Track quiz The seven rules from the labs, then questions on each idea. · 7 min
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