Name: ______________________________
Date: _______________________
Total:
20
Science 14
Chapter 4: Solutions and the Environment
Quiz
A. Multiple Choice (10 marks)
Directions: Read each question carefully and select the best response. Circle your answer.
1. Which of the following statements describes a concentrated solution?
a)
b)
c)
d)
contains more solute per volume
appears to contain two layers
contains more solvent
contains a solute only
2. Several manufacturers have developed concentrated products. Choose a good reason
for adopting this type of packaging.
a)
b)
c)
d)
the cost for the packaging will be higher
the overall cost for the product will be higher
the size of the package will be larger
the size of the package will be smaller
3. How would you dilute a solution?
a)
b)
c)
d)
add water
add more solute
evaporate excess water
add both solute and solvent
4. An unknown sample is tested with litmus paper. The red litmus paper turns blue and
the blue litmus paper stays blue. What does this mean?
a)
b)
c)
d)
The sample is an acid.
The sample is a base.
The sample is neutral.
More tests need to be done.
1
Name: ______________________________
Date: _______________________
Use the following information to answer question number 5.
The pH scale may be used to differentiate between acids and bases. The pH of four
different samples is tested. These are the results:

pH of solution 1 = 2.3

pH of solution 2 = 7.0

pH of solution 3 = 5.6

pH of solution 4 = 10.0
5. Which of the following descriptions best matches the results, starting with Solution 1?
a)
b)
c)
d)
base, neutral, base, acid
acid, neutral, base, base
neutral, base, acid, base
acid, neutral, acid, base
6. Which of the following flavourings is an acid?
a)
b)
c)
d)
Vinegar
Butter
Olive oil
Salt
7. Neutralization happens when acids react with bases. Which of the following is an
example of neutralization?
a)
b)
c)
d)
making hand soap
antacids used to treat heartburn
corrosion
washing hair with a low pH shampoo
8. The air corrodes metals. What part of the air is involved in this reaction?
a)
b)
c)
d)
carbon dioxide
oxygen
hydrogen
nitrogen
2
Name: ______________________________
Date: _______________________
9. Which of the following statements about corrosive substances is correct?
a)
b)
c)
d)
have a pH near 7.0
taste sour only
may cause severe burns to skin
cure heartburn
10. The rust on cars is formed by corrosion. Which of the following statements is correct?
a)
b)
c)
d)
Rust occurs on copper metal only.
Rust increases in the presence of carbon dioxide.
Rust decreases in the presence of oxygen.
Rust increases in the presence of acid rain.
B. Short Answer (10 marks)
Directions: Read each question carefully and provide your response in the space provided.
11. Describe the difference between the following terms. (2 mark each)
concentrated and dilute
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
12. Define “neutralization.” (2 marks)
___________________________________________________________________________
___________________________________________________________________________
13. Why do scientists use indicators to identify acids and bases? (1 mark)
___________________________________________________________________________
___________________________________________________________________________
3
Name: ______________________________
Date: _______________________
14. The pH scale is used to rate acids, bases, and neutral substances. Describe the pH
range of these classifications and provide one example each of an acidic, neutral,
and basic substance. (4 marks).
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
15. Acids and bases may be very corrosive. What two things would you do to protect
yourself while handling a corrosive substance? (1 mark)
_____________________________________________________________________
_____________________________________________________________________
4