D2.3.8 (HL)—Water potential
Water potential measures the potential energy of water per unit volume, with pure water defined as zero kilopascals in standard conditions.
- Syllabus
- First assessment 2025
- Objective
- D2.3.8
- Level
- HL
Concept essentials
- Pure water has water potential of zero kilopascals at standard conditions.
- Adding solute lowers water potential.
- Pressure can raise water potential in walled cells.
- Water potential predicts the direction of net water movement.
ConceptIB Biology HL