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Surface Tension
amount of energy required to stretch or increase the surface of a liquid by a unit area.
Directly Proportional
Relationship between Intermolecular Forces and Surface Tension
Because of its hydrogen bonds
Why water has a great surface tension?
Capillary Action
It is the tendency of a liquid to rise in a narrow tubes or to be drawn into small openings.
capillarity
a result of intermolecular attraction between the liquid and solid material
Adhesion and Cohesion
Two types of Capillary Action
Cohesion
intermolecular attraction between like molecules
Adhesion
intermolecular attraction between unlike molecules
Cohesion
shown in convex form
Adhesion
shown in concave form
Glycerol
has three- OH groups that can participate in hydrogen bonding with other glycerol molecules.
Because of the increasing number of carbons in the hydrocarbon chain, the viscosity also increases.
What causes the differences in viscosities of hydrocarbons in the list?
Water
Universal solvent
Unlike most substances, water is denser in its liquid state than in its solid state.
How does water’s density compare to other substances?
Each oxygen atom is tetrahedrally bonded to four hydrogen atoms—two by covalent bonds and two by hydrogen bonds.
How are water molecules bonded in liquid form?
Higher temperatures reduce viscosity, so thicker oils are needed in summer; lower temperatures increase viscosity, so thinner oils are needed in winter.
Why should motorists use more viscous oils in the summer and less viscous oils in the winter?
inversely proportional
relationship between temperature and viscosity
Note 
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