BRAINCAKEWater and Hydrogen Bonding
Water is a polar molecule.
It is a covalent molecule with no overall charge but there is a slightly uneven distribution of electrons between the oxygen atom and the hydrogen atoms. This makes the hydrogen atoms slightly positive and the oxygen atom slightly negative.
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Key terms in this lesson
- hydrogen bond
- A weak electrostatic attraction between a slightly positive hydrogen atom on one polar molecule and a slightly negative atom, such as oxygen or nitrogen, on another.
- specific heat capacity
- The energy needed to raise the temperature of 1 kg of a substance by 1 degree Celsius.
- latent heat of vaporisation
- The energy needed to evaporate 1 kg of a liquid without a change in temperature.
- cohesion
- The attraction between molecules of the same substance, in water caused by hydrogen bonding.
More in Nucleic Acids
- Evidence for Semi-Conservative Replication
- ATP
- ATP Synthesis
- Roles of ATP
- Specific Heat Capacity of Water
- Latent heat of Vaporisation of Water
- Cohesion and Surface Tension of Water
- The Importance of Water
All 18 lessons in Nucleic Acids · All AQA AS-level Biology topics