Terms
What term means the substance that is dissolved in a solution?
What is...
Solute
Colligative Properties:
If water boils at 100º C, and a 12M baking soda solution has a boiling point of 112ºC...what is the boiling point of a 12M salt solution?
What is...
112º C
Water is called the "universal solvent" and it often has ions dissolved that help it conduct electricity.
Is PURE water (no ions) a good conductor of electricity?
What is...
NO!
Does stirring increase or decrease the rate (how fast) of something dissolving?
What is...
Increase the rate
What is the term given to something that conducts electricity when dissolved in water?
What is...
electrolyte
What term means the substance that DOES the dissolving?
What is...
Solvent
What is the molarity of a solution that has 0.87 moles of NaCl dissolved in 87 Liters of water?
What is...
0.01M NaCl
What do Colligative properties depend on?
(Type of substance or Concentration)
What is...
Concentration
**The two we talked about are freezing point depression and boiling point elevation**
As the pressure above a liquid decreases, what happens to the solubility of gases?
(increase/decrease)
What is...
decrease.
What is the term for a solution that has less than the maximum amount dissolved?
What is...
Unsaturated
What is the term that means "when a solid does NOT dissolve in solution?"
What is...
insoluble
If we have 2L of a 3M NaOH solution, how many moles of NaOH are dissolved in the solution?
What is...
6 moles of NaOH
True/False:
When salt dissolves in water, it will raise the boiling point AND lower the freezing point.
What is...
True
As temperature increases, will you be able to dissolve more or less of a solid?
(think about brewing sweet tea)
What is...
More
What is the term for a solution that has more than the maximum amount dissolved?
What is..
supersaturated
What describes the "amount of solute that will dissolve in a specific amount of solvent?"
(solute, solvent, solubility, solution, soluble)
What is...
Solubility
You dissolve 0.89 moles of NaCl to create a 2.4 molar solution. What is the volume of your solution?
What is...
0.371 Liters
True/False:
Based on the demonstration of mixing heptanes (gasoline) and water, polar substance WILL mix with non-polar substances.
What is...
False.
As Temperature increases, how is the solubility of gases affected?
What is...
the solubility decreases
What is the term for when two liquids will not mix?
What is...
Immiscible
What term means a 'homogenous mixture' of two or more substances in a single physical state?
What is...
Solution
200mL of a 13.5M solution are diluted with 500mL of water to give a new volume of 700mL, what is the new concentration of the solution?
And how much water was used in this dilution?
What is...
3.86M
What are the 3 main ions responsible for cellular communication (muscular/nervous systems)?
What are...
K+, Cl-, and Na+
As the surface area of a substance increases, how does this affect how fast it will dissolve?
(think of a block of salt vs grains of salt)
What is...
As surface area increases, the substance will dissolve faster.
Ionic compounds break into individual (ions/molecules) in solution while covalent compounds break into individual (ions/molecules) when they dissolve in water.
What is...
Ions; Molecules