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Worksheets

pH Scale

Total questions: 15

Worksheet time: 1hrs 15mins

Name
Class
Date
1.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
2.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
3.

What is the only substance with a neutral pH of 7?

a)

Milk

b)

Orange Juice

c)

Pure Water

d)

Blood

e)

All Water

4.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

a)

Both of the solution are bases

b)

Both of the solution are acids

c)

The Baking soda is an acid and the Bleach is a base

d)

The baking soda is a base and the Bleach is an acid.

5.

A pH of 3 is how many times more acidic than a pH of 5?

a)

2

b)

20

c)

10

d)

100

6.
On the pH scale higher numbers indicate
a)
acids
b)
bases
7.

Water has a neutral because

a)

it has more H+ ions than OH-

b)

it has more OH- ions than H+

c)

it does not produce any ions

d)

it has an equal amount of H+ and OH- in solution

8.
A solution has a pH of 7.0.  What would happen to the pH if H ions were added?
a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
9.
Feels slippery.
a)
Acids
b)
Bases
c)
All
10.

A chemical has a pH = 6. It would be best described as

a)

Strong acid

b)

Strong base

c)

Weak acid

d)

Weak base

11.

Substances that taste sour like lemon juice tend to be classified as

a)

Acids

b)

Bases

c)

Salts

d)

All

12.

Substances like dark chocolate that have a bitter taste, usually indicates that it would be classified as a

a)

Acids

b)

Bases

c)

Salts

d)

All

13.

What does pH measure?

a)

the amount of hydrogen (H+) ions

b)

the amount of hydroxide (OH-) ions

c)

amount of water

d)

all of the above

14.
The pH at the equivalence point of the titration of a strong acid with a strong base is usually:
a)
acidic 3.9
b)
acidic 4.5
c)
neutral 7.0
d)
basic 8.2
15.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.