Chemistry · KS3 Y7 · Atoms, Elements & Compounds
Physical vs chemical change
Physical vs chemical changeFree2:35Heddy Score 3 of 7, below the standard
What you need to know
- A physical property, such as melting point, density or colour, can be observed or measured without the substance changing into anything else.
- A chemical property describes how a substance reacts to form new substances, such as burning or reacting with acid.
- The same test sorts a change as physical or chemical: do new substances form?
Heddy ScoreSeven checks every clip must pass before students see it: trusted, on the map, accurate, focused, accessible, safe, and proven by students.3/7, 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.
Our students
Not enough students yet
Our own students' answers. These are what move ★7 Proven.On YouTube
How the Heddy Score works648K views · 3.28K likes · MooMooMath and Science 642K subscribers
As reported by YouTube on 2026-11-02. Not part of the Heddy Score.Why we picked it
Sorts properties as physical or chemical by whether new substances form, the same test as physical vs chemical change; US channel, so the examples are everyday rather than UK-spec.
MooMooMath and Science on YouTubechecked 2026-10-18
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