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Practice Test - pH Scales



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The pH scale measures
a.
the strength of an acid.
b.
the strength of hydrogen ions.
c.
the concentration of hydrogen ions.
d.
the concentration of an acid.
 

 2. 

Normal rainfall is slightly acidic, which means its pH must be
a.
less than 2.
b.
between 5 and 7.
c.
between 2 and 4.
d.
between 7 and 9.
 

 3. 

You can find the pH of a substance by using
a.
plain paper.
b.
a thermometer.
c.
litmus indicator.
d.
a conductivity tester.
 

 4. 

A solution that has a pH of ____ is neutral.
a.
0
c.
7
b.
1
d.
14
 

 5. 

Human blood has a pH of between 7.38 and 7.42. This means that the blood is
a.
very acidic.
c.
very basic.
b.
slightly acidic.
d.
slightly basic.
 

 6. 

The pH of a solution is a measure of
a.
the hydronium ion concentration in the solution.
b.
the hydrogen ion concentration in the solution.
c.
how acidic or basic a solution is.
d.
All of the above
 

 7. 

Some plants, such as pine trees, prefer soil with a pH between 4 and 6. These plants prefer
a.
acidic soil.
c.
salty soil.
b.
basic soil.
d.
neutral soil.
 

 8. 

Plants such as lettuce grow best in soil with a pH between 8 and 9. These plants prefer
a.
salty soil.
c.
acidic soil.
b.
basic soil.
d.
neutral soil.
 

 9. 

Freshwater fish need water near pH 7. These fish prefer
a.
acidic water.
c.
neutral water.
b.
basic water.
d.
salty water.
 

 10. 

Rainwater can have a pH as low as 3, meaning that it is very
a.
acidic.
c.
neutral.
b.
basic.
d.
salty.
 



 
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