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Formation of Solutions

Formation of Solutions. By Adam Krull and Trevor Edinger. How does a solution form?. If a solution is to form, a substance must dissolve into another. A solute is what is being dissolved. A solvent is what is doing the dissolving. Types of Solutions. Air(oxygen, carbon dioxide in nitrogen)

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Formation of Solutions

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  1. Formation of Solutions By Adam Krull and Trevor Edinger

  2. How does a solution form? • If a solution is to form, a substance must dissolve into another. • A solute is what is being dissolved. • A solvent is what is doing the dissolving.

  3. Types of Solutions • Air(oxygen, carbon dioxide in nitrogen) • Water in air. • Sugar water(water in sugar) • Pop(carbon dioxide in water)

  4. Three Properties of Liquid Solutions • 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.

  5. 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.

  6. Heat of a solution • 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.

  7. How does Sugar Dissolve in Water? • 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.

  8. Why is Salt Used for De-Icing Roads? • 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)

  9. What is Ionization? • Ionization is the process where neutral molecules gain or lose electrons. • Unlike dispersion or dissociation, ionization is a chemical change.

  10. 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.

  11. 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.

  12. Why Does Hard Candy Dissolve in your mouth? • 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.

  13. Quiz • 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?

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