Solutions

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Solutions 22.1
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Solution A mixture that appears the same
throughout and is mixed at a molecular
level (Kool-Aid)
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Solute The substance being
dissolved (Sugar) Solvent
The substance that is doing the dissolving (Water)
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Water is the universal solvent Solutions can be
solids, liquids, or gases Alloys are solid
solutions
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• How Dissolving Occurs
• Water molecules are polar

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2. They cluster around solid molecules, with
their negative ends attracted to the positive
ends of the solids
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3. Water molecules pull the solid particles into
the solution 4. The moving water and solid
molecules spread out and mix evenly to form a
solution
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5. When mixing solids to make an alloy solution,
you must melt the solids
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• Rate of Dissolving Depends on
• Stirring It speeds up
  dissolving by bringing more fresh solvent into
  contact with more solute

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2. Crystal Size -Breaking a solid into pieces
(powder) increases its surface area, which speeds
up dissolving
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3. Temperature Higher temperature of a solvent
speeds up the movements of its particles
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4. To make a gas dissolve quicker in a liquid,
cool the liquid solvent and increase the pressure
of the gas