Solutions (= homogeneous mixtures) The two components of a mixture: 1.solute (the substance being...
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Solutions (= homogeneous mixtures)
The two components of a mixture:1. solute (the substance being dissolved)2. solvent (the medium that dissolves the
solute)
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Solutions (= homogeneous mixtures)Salt water is the classic example of a solution:
Solutions don’t have to be liquid:
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Colloid Suspensions Produce the Tyndall Effect:
Suspension: Particles in a mixture are so large that they settle out (e.g., Italian S.D.)
Solution: Particles are so small that they are uniformly dispersed in a single phase (e.g., air, soft drink)
Colloids: Particles of intermediate size between
suspension & solution; don’t settle out but interfere with light passing through
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Solutes: Categories base on electrical conductivity (electricity is essentially the flow of electrons)• Electrolytes:• Conduct electricity when dissolved in water.• ionic compounds (ions can carry charge)
• Nonelectrolytes:• Do not conduct electricity when dissolved in
water• molecules
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