2. The Water Molecule
• Molecule is neutral
–Electrons pulled more towards
oxygen, which creates a slightly negative
charge towards the oxygen (polar regions
are charged regions)
–Pull between a partially charged hydrogen
atom on one molecule and a partially
charged oxygen on another atom is known
as a hydrogen bond
3. Properties of Water
• Adhesion
– attraction between molecules of a different substance
• Cohesion
– Attraction between molecules of a different substance
• High Heat capacity
– Amount of heat energy needed to increase a
substance’s temperature
• Capillary action
– Tendency of liquids to rise in small tubes
4. Other Vocabulary
• Solution – mixture in which the molecules of a
substance are evenly spread out
• Suspension – mixture of water and non-
dissolved materials that do not settle out
