Physics · KS3 Y8 · Matter & Particles

Brownian motion

Brownian motionFree4:04Heddy Score 3 of 7, below the standard

What you need to know

  • Particles in solids vibrate in fixed positions, while particles in liquids can move around one another.
  • Gas particles move rapidly and randomly.
  • Brownian motion occurs when invisible fluid particles collide unevenly with visible smoke or carbon particles.

In this clip

Runs 4:04, from 0:05 to 4:09 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

479K views · 2.02K likes · Ian Collier 51.1K subscribers

As reported by YouTube on 2026-11-03. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

Uses microscope observations to connect Brownian motion with particle movement.

Ian Collier on YouTubechecked 2026-10-20

Plays from youtube-nocookie.com. No YouTube cookies until you press play.