These pages are designed to help students prepare for the tests, quizzes, and other assignments throughout the duration of the course.

 

Parents


Parents, be sure to check PowerSchool on a regular basis so that you can keep up to date on your child's performance in the class. If you have any questions, feel free to email me.

 

 

Practice Problems

 

Find the type of practice problem that you need.
There are Concept Questions, as well as Math Practice Problems.
You can put in any value you want or have it put in a set of numbers for you.
Pop-up Blockers will need to be turned off for these to work!!

Solutions

Multiple Choice

Answer all the Multiple Choice Questions then hit "Check" after the last multiple choice question

What happens when you add solute to an unsaturated solution?
the solute settles at the bottom
the solvent settles at the bottom
the solute dissolves completely
the solvent dissolves completely

What is the concentration of a solution?
an indication of how unbreakable it is - like: how solid it is
an indication of how much solute it has
an indication of how much solvent it has
an indication of the temperature of the solution

Which of the following statements is true about how using smaller salt crystals would affect the rate of making a salt solution in water?
Smaller crystals increase the surface area and slow down dissolving
Smaller crystals decrease the surface area and speed up dissolving
Smaller crystals increase the surface area and speed up dissolving
Smaller crystals decrease the surface area and slow down dissolving

A solution of one solid metal in another is called a(n) __________
mixture
alloy
supersaturated solution
crystal

Adding a solute to a solvent __________ the freezing point of the solvent
lowers
raises
does not change
doubles

Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?
Nitrogen
Oxygen
Argon
water

Gases are __________ in cooler solvents.
insoluble
less soluble
more soluble
precipitates

Sterling silver contains 92.5 percent silver and 7.5 percent copper. Which substance is the solute?
Solids do not form solutions.
Silver
Copper
huh?? How am I supposed to know this!

Which of the following does NOT increase the rate of dissolving of a solid into a liquid?
stirring
crushing the solid into small pieces
making the liquid's temperature lower
raising the temperature of the liquid

__________ have the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
unsaturated solutions
saturated solutions
supersaturated solutions
concentrated solutions

the term that describes the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature is ________
concentrated
solubility
supersaturation
none of the above

Polar solvents will dissolve ________.
nonpolar solutes
polar solutes
nonpolar solvents
not enough information


How much Potassium Bromide (KBr) will you have to add to 100 g of water at 90�C to make a saturated solution? would this most likely be?
90
100
180
200


If 65 g of Potassium Nitrate are dissolved in 100 g of water at 50�C, how would you describe the solution?
saturated
unsaturated
supersaturated


Which of the following solutes is the least affected by an increase in temperature?
potassium bromide
potassium nitrate
sodium chloride
sodium chlorate

Which of the following statements about solubility is generally true as the temperature decreases?
The solubility of gases increases, while the solubility of solids decreases.
The solubility of gases decreases, while the solubility of solids increases.
The solubility of both gases and solids increases
The solubility of both gases and solids decreases






Physical Science