Colligative
properties
properties
Polarity
Solution
Solubility
vocabulary
100
What is a colligative property?
What is...the physical changes that result from adding solute to a solvent.
100
What does the rule "like dissolves like" mean?
What is...substances with similar chemical properties dissolve in each other.
100
What type of mixture is a solution? Is it combined chemically or physically?
What is...homogeneous, physically.
100
What is...NaNO3.
100
What does the term saturated mean?
What is...a solution in which the maximum amount of solute is being dissolved.
200
List the colligative properties discussed in class.
What is...vapor pressure / boiling point / freezing point
200
Oil will NOT dissolve in water. Why?
What is...Water is a polar molecule. Oil is a nonpolar molecule and "like dissolves like" so their opposite polarities will not allow them to dissolve in each other since the polarities aren't alike.
200
What are the two parts of a solution?
What is...solvent and solute.
200
When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as
What is...unsaturated.
200
what is the difference between supersaturated and unsaturated?
What is...
Supersaturated: A solution in which more than the maximum about of solute is being dissolved
Unsaturated: A solution in which less than the maximum about of solute is being dissolved.
300
How does adding a solute (like salt) to a pure solvent (like snow – water) influence freezing point of the solution
What is...lowers the freezing point of the solution.
300
What does aqueous mean?
What is...dissolves in water
300
Why is water nicknamed “the universal solvent?”
What is...it is both polar and covalent.
300
At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K2Cr2O7?
What is...60ºC
300
Differentiate between the following terms: soluble, insoluble, miscible, immiscible
what is...
soluble: A solid solute is able to dissolve in a liquid.
Insoluble: A solid solute cannot dissolve in a liquid.
Miscible: A liquid can dissolve in another liquid.
Immiscible: A liquid cannot dissolve in another liquid.
400
How does adding a solute (like salt) to a pure solvent (like water) influence boiling point of the solution?
What is...increases the boiling point of the solution.
400
True or false. Polarity can affect solubility.
What is...true because of the "like dissolves like" principle.
400
In a saltwater solution, which component is the solute and which is the solvent?
What is... salt is the solute and water is the solvent.
400
Solubility refers to the ____ of solute that can dissolve in a certain volume or mass of solvent, at a certain temperature.
What is...amount/mass.
400
what does dissociation mean?
What is...the breaking apart of the solute by the solvent.
500
Will ionic or molecular solutes have a bigger effect on the colligative properties of a solvent?
What is...Ionic solutes will have a larger effect on the colligative properties.
500
Is NaCl an electrolyte or a non-electrolyte and why?
What is...electrolyte because its an ionic compound (one metal + one nonmetal)
500
Identify the solute and solvent in an aqueous solution of silver chlorate.
What is...the solute is silver chlorate (AgClO3), and the solvent is water (H2O).
500
Define solubility.
What is...how much solute can dissolve in a solvent.
500
What is the difference between polar and nonpolar particles?
What is...
Polar: Particles that have regions of opposite charges.
Nonpolar: Particles that have no regions of opposite charges.