Edexcel GCSE Biology · 1BI0
Specification 9.14 · Paper 2
Loading…
Loading…
Loading…
GCSE Biology · key term
The change of water vapour into liquid water as it cools.
Used by Edexcel and OCR
Specification 9.14 · Paper 2
Specification B1.3f, B4.1c · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction in which molecules join and water is produced.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction that joins smaller molecules together and produces water.
Revise: Biological MoleculesJoining small units involves forming chemical bonds; a condensation reaction produces water as the units join. Breaking these bonds by hydrolysis uses water. During digestion, enzymes help break large food molecules into smaller molecules that can be absorbed.
In the water cycle, evaporation produces water vapour; condensation changes water vapour into liquid droplets; precipitation returns water to Earth’s surface.
Create a free account to read GCSE Biology revision notes for your exam board and track your progress.