Download Formation of Solutions

Formation of Solutions
By Adam Krull and Trevor
Edinger
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If a solution is to form, a substance must
dissolve into another.
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A solute is what is being dissolved.
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A solvent is what is doing the dissolving.
Types of Solutions
Air(oxygen, carbon dioxide in nitrogen)
Water in air.
Sugar water(water in sugar)
Pop(carbon dioxide in water)
 Conductivity –The amount of electricity that can flow
through the solution.
 Freezing Point-The temperature at which the solution
will freeze.
 Boiling Point-The temperature that the solution boils.
How does Sodium Chloride
Dissolve in water?
 Sodium Chloride is an Ionic Compound.
 It is the Solute.
 Water is the Solvent.
 Sodium Chloride dissolves by dissociation.
 This is how an Ionic Compound separates into ions.
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When a solution is formed, heat is released or
cold is released.
When sodium hydroxide dissolved in water, it
becomes warmer.
Opposite this, if Ammonium Nitrate is
dissolved in water, the solution becomes
colder.
• Sugar dissolves by a process called dispersion.
• Dispersion is breaking into small pieces.
• The sugar is broken down into smaller pieces
and spread throughout the water.
• Salt is commonly used to keep ice from freezing on roads.
• When salt and some water is added to ice, it lowers the
freezing point of water.
• More and more particles of salt are added, and the freezing
point is made lower and lower.
• Salt can melt ice down to 15 degrees Fahrenheit. (-9 degrees
Celsius)
What is Ionization?
• Ionization is the process where neutral
molecules gain or lose electrons.
• Unlike dispersion or dissociation, ionization is a
chemical change.
FACTORS CAN AFFECT THE RATE OF
DISSOLVING
Things such as heat or cold can affect the rate of
dissolving.
The hotter something is, the faster it will dissolve.
The colder the solution is, the slower it will dissolve.
FACTORS CAN AFFECT THE RATE OF
DISSOLVING (CONT.)
Surface area can also affect the rate of
dissolving.
The smaller the surface area, the faster that
something will dissolve.
If the surface area is smaller, the solution will
dissolve slower.
• Remember the candy is the solute.
• And the saliva is the solvent.
• The water in your saliva helps to dissolve the
sugar in the candy by dispersion.
• Eventually the candy is completely dissolved.
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1.What is Ionization?
2.What is Dissociation?
3.Name 1 type of solution.
4.Name 1 factor that can affect dissolving.
5.What is a solute?
6.What is a solvent?
7.Is candy the solvent of saliva? True or False?
8.Salt can melt down ice to what degree Fahrenheit?
9.A small surface area means faster or slower dissolving?
10.Is Ionization a physical or chemical change?