Chemistry · GCSE · Organic Chemistry

Fractional distillation and petrochemicals

gcse-chem-5-7-1-2Free3:56Heddy Score 2 of 7, below the standard

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What you need to know

  • Crude oil is heated and its vapour rises up a column that is cooler at the top.
  • Fractions condense at different heights according to boiling point.
  • Fractions give fuels and feedstock for the petrochemical industry.

In this clip

Heddy Score2/7, Below the standard
  • 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 · not judged yet. 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.
How the Heddy Score works

Why we picked it

Cognito GCSE lesson on crude oil and separating it by fractional distillation.

Cognito on YouTubechecked 2026-10-16