Show:
Why Does it Disappear?
Hot and Cold
M & m's
Points and Process
Pot Luck
100
When solute and solvent are mixed together
What a solution?
100
Process by which a solid solute leaves a solution and turns back into its solid phase.
What is precipitation?
100
Number of moles of solute per kilogram of solvent
What is molality (m)
100
Process that releases heat.
What is exothermic process?
100
Why an open glass of soda on the counter gets less fizzy than the same open glass of soda in the refrigerator.
What is a soda pop gets flat because the CO2 dissolved in it escapes. Since the solubility of gases increase with decreasing temperature, a colder soda pop will hold onto more CO2 than a warm soda pop.
200
Substance being dissolved
What is solute?
200
The solubility of solid solutes usually ______________ with increasing temperature.
What is increases?
200
Number of moles of solute per liter of solution
What is molarity (M)?
200
Process that absorbs heat.
What is endothermic process?
200
Freezing point of a solution made by mixing 42.0 grams of NH3 with 420.0 gams of water? (Ki for water is 1.86 degrees C/m)
What is -10.9 degrees C
300
Substance in which we are dissolving
What is a solvent?
300
The solubility of ____________ solutes is not affected by temperature.
What is liquid?
300
Molality of a solution made with 75.0 moles of potassium hydroxide with 4.50 kg of water.
What 16.7 m?
300
When a solute is dissolved in a solvent, the solution always has a lower freezing point than the pure solvent.
What is freezing-point depression?
300
Difference in how ionic compounds dissolve in water versus how polar covalent compounds dissolve in water.
What is Ionic compounds split up into their ions when they dissolve. Thus, an ionic compound will split up into 2 or more ions in solution. On the other had, polar covalent compounds dissolve 1 molecule at a time.
400
The maximum amount of solute that can dissolve in a given amount of solvent.
What is solubility?
400
The solubility of gases ____________ with increasing temperature.
What is decreases?
400
Molality of a solution with 70.0 g of CaBr2 and 1314 g of water.
What is 0.266 m?
400
When a solute is dissolved in a solvent, the boiling point of the solution is higher than that of the pure solvent.
What is boiling-point elevation?
400
Boiling point of a solution made by mixing 50.0 g ammonium sulfide with 375.0 grams of water.
What is 103.0 degrees C?
500
A solution in which the maximum amount of solute has been dissolved.
What is a saturated solution?
500
___________ pressure increases the solubility of gases.
What is increasing?
500
Grams of CaCl2 needed to add to 1250 g of water to make a solution with a concentration of 2.0 m?
What is 280.0 CaCl2?
500
Best compound to protect water from freezing: NaNO3 Mg(NO3)2 Al(NO3)3
What is Al(NO3)3
500
How to increase the solubility of a gas into a liquid.
What is cool the liquid?