WorksheetsPractice for Solutions
Total questions: 20
Worksheet time: 31mins
Name
Class
Date
1.
_____ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
a)
Solubility
b)
Volume
c)
Density
d)
A solution
2.
The solubility of all the chemicals increases as temperature increases. Is it true of false in the data shown in the graph below?
a)
True
b)
False
3.
In the data shown in the graph below, the solubility of WHICH salt does not increase as temperature increases?
a)
NH₃
b)
KI
c)
NaCl
d)
KNO₃
4.
In the solubility chart below, which of the following describes a correct trend?
a)
The solubility of all the compounds increases as temperature increases.
b)
As temperature increases from 30°C to 60°C, the solubility of KNO₃ increases more than that of KCl
c)
An increase in atmospheric pressure causes an increase in the solubility of KCl.
d)
D. Increasing the temperature of a KNO₃ solution from 30°C to 60°C decreases the solubility of KNO₃ by half.
5.
125 grams of fructose is dissolved in 375 mL of water. What is the percent mass of this solution?
a)
3%
b)
33%
c)
25%
d)
40%
6.
Which is NOT true of an electrolyte?
a)
It is a solution containing molecules.
b)
It is a solution containing ions.
c)
It conducts electricity.
d)
All acids and bases are electrolytes.
7.
If you put too many scoops of coffee in the coffee maker. What type of coffee solution did you make and how could you fix the mistake without throwing the coffee away?
a)
You made a dilute coffee solution and can fix it by adding extra sugar to it
b)
You made a dilute coffee solution and can fix it by adding water to it
c)
You made a concentrated coffee solution and can fix it by adding extra sugar to it
d)
You made a concentrated coffee solution and can fix it by adding water to it
8.
If you are making Gatorade by mixing the powder with water, which substance is the solute and why?
a)
Water; The Gatorade mix is a solid
b)
Gatorade mix powder; The Gatorade mix is a solid
c)
Gatorade liquid; The Gatorade mix is a solid
d)
Suger; The Gatorade mix is a solid
9.
Using the solubility curve, how would you classify a KBr solution with 95 g of solute in 100 g of water at 50°C in terms of saturation?
a)
saturated
b)
unsaturated
c)
supersaturated
d)
Dilute
e)
Concentrated
10.
Which is NOT true of the solubility curve below?
a)
The higher the temperature, the greater the solubility.
b)
NaCl has the lowest solubility at 90 degrees Celcius.
c)
All of the substances above represent solid solutes.
d)
KNO₃ is least affected by a temperature increase.
11.
Select the properties of a solution of salt water that will allow additional salt to dissolve the quickest.
a)
high temperature and high salt concentration
b)
high temperature and low salt concentration
c)
low temperature and low salt concentration
d)
low temperature and high salt concentration
12.
If a pharmacist needs to dissolve crystals into water in order to make cough syrup, with which of the following methods would he make the solution the fastest?
a)
low temperature; no stir
b)
low temperature; stir
c)
high temperature; no stir
d)
high temperature; stir
13.
According to the solubility curve, how many grams of KNO₃ are needed to make a saturated solution in 100 g of water at 50°C.
a)
40
b)
80
c)
110
d)
240
14.
According to the solubility curve, which action would allow 200g of KNO₃ to completely dissolve in 100g of water?
a)
heat the solution to 50 °C
b)
cool the solution to 20 °C
c)
heat the solution to 90 °C
d)
cool the solution to 0 °C
15.
According to the solubility curve, the solubility of which salt would be most soluble at 20 degrees Celsius?
a)
NaCl
b)
KNO₃
c)
NaClO₃
d)
KCl
16.
According to the solubility curve, the solubility of which solution is least affected by temperature and how do you know?
a)
NaCl, because the slope of its line is steepest
b)
KNO₃, because the slope of its line is steepest
c)
NaCl, because the slope of its line is most gradual
d)
KCl, because the slope of its line is most gradual
17.
According to the solubility curve, at what temperature is the solubility of NaClO₃ the same as that of KNO₃ ?
a)
20 °C
b)
33 °C
c)
50 °C
d)
77 °C
18.
If a solution is an electrolyte, then it will allow electricity to flow. Which solution is unlikely to conduct?
a)
a. A salt water solution
b)
b. A strong acid
c)
c. A weak acid
d)
d. A sugar solution
19.
Josh wants to test an unknown chemical solution. What test should he perform to safely determine whether the chemical is an acid or a base?
a)
test the solution by calculating its density
b)
test the solution by increasing the temperature
c)
test the solution by tasting it
d)
test the solution with litmus or indicator paper
20.
Which is true of water?
a)
a. Water will dissolve all substances.
b)
b. Water is polar and will dissolve only polar substances.
c)
c. Water is polar and will dissolve only nonpolar substances.
d)
d. Water is nonpolar and will dissolve any other nonpolar substance.
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