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Unit 1 topic 3

Kouture Boreland

TermDefinition
Cohesion This means that water molecules stick to each other.
Adhesion This means that water molecules stick to other materials.
Polar molecule A compound with one negatively charged side and one positively charged side.
Hydrogen bond A hydrogen bond is when the side with the hydrogen atoms (positive charge) attracts the oxygen side (negative charge) of a different water molecule.
Surface tension When water has a thin “skin” on its surface due to the water molecules sticking together.
Capillary action When cohesion and adhesion work together to allow water to travel against gravity and move up a plant stem.
Specific heat capacity Specific heat is the amount of heat required to change the temperature of a unit mass of a given substance by a unit amount (usually a degree).
Expansion upon freezing As water decreases in temperature, the molecules move away from each other. This changes an increase in volume, which leads to its expansion upon freezing.
Universal solvent Water is called a universal solvent because it dissolves more substances than any other liquid.
Created by: user-2051844
 

 



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