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DP Biology Vocabulary - 2.2 Water
Essential vocabulary for the IBO DP Biology course
Terms in this set (14)
the force by which individual molecules cling to surrounding material and surfaces.
the temperature at which the vapour pressure of a given liquid reaches atmospheric pressure and thus starts to boil (100°C for water).
the force by which individual molecules stick together.
the temperature at which a liquid solidifies (0°C for water).
Specific heat capacity
the amount of energy required to raise the temperature of water by one degree Celsius (water has to absorb 4.184 joules of heat for the temperature of one gram of water to increase by 1°C).
a weak bond caused by electrostatic attraction between a positively-charged part of one molecule and a negatively-charged part of another.
molecules capable of interacting with water through hydrogen bonding (having an affinity for water).
molecules that lack an affinity for water (water insoluble).
a light, colourless gas (CH4).
property of having distinct and opposite charges (poles).
the property of a substance of being soluble (dissolved).
a liquid in which substances (or solutes) are dissolved to form a solution.
Surface tension (of water)
the intermolecular hydrogen bonds between molecules of water at the surface.
property that allows light to penetrate molecules of water.
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