A1.1 Water
Water’s polarity and hydrogen bonding create solvent, thermal, cohesive and adhesive properties that support metabolism, transport, cooling and aquatic life.
- Syllabus
- First assessment 2025
- Topic
- A1.1
- Level
- SL
What you’ll learn
6 learning objectivesChoose one objective for a focused lesson, or study the complete topic.
Exam analysis
An aggregate view of how the complete A1.1 Water appears across past papers.
Chance of appearing21%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper1
Most tested objectives
- A1.1.2—Hydrogen bonds in water18 questions
- A1.1.3—Cohesion of water molecules6 questions
- A1.1.5—Solvent properties of water4 questions
Common question formats
- Definition or recall
- Diagram interpretation
- Process explanation
- Comparison
- Data analysis
- Structured response
Exam question appearances
November 2025Paper2 SL · TZ37(a)[ 4 ]A1.1.2—Hydrogen bonds in water
November 2025Paper2 SL · TZ13(e)[ 2 ]A1.1.2—Hydrogen bonds in water
November 2025Paper1A SL · TZ11[ 1 ]A1.1.6—Physical properties of water for aquatic animals
November 2025Paper1A SL · TZ31[ 1 ]A1.1.4—Adhesion of water
May 2025Paper2 SL · TZ16(a)[ 4 ]A1.1.3—Cohesion of water molecules
Practice this topic
1 original exam-style questions based on the patterns above.
Coverage 2010–2025 · Updated 14 Jul 2026