WorksheetsAcids and Bases
Total questions: 30
Worksheet time: 29mins
Name
Class
Date
1.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
2.
Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker
The substance in the beaker
a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
3.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
4.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
5.
Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
6.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
9
c)
7
d)
5
7.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
8.
Many cleaning solutions are bases. Which of the following is a property of most bases?
a)
feels slippery
b)
white color
c)
can only be liquid
d)
tastes sour
9.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
10.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
11.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
12.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
13.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
14.
Which of the following is true about acids and bases?
a)
The lower the pH, the stronger the acid
b)
the higher the pH, the stronger the acid
c)
The lower the pH, the more neutral the acid
d)
The higher the pH, the weaker the base
15.
Which of the following is true about acids and bases?
a)
The higher the pH, the stronger the base
b)
the higher the pH, the stronger the acid
c)
The lower the pH, the more neutral the acid
d)
The higher the pH, the weaker the base
16.
Explain what happens when a strong acid and a strong base are poured into the same container.
a)
they form separate layers
b)
they mix physically but not chemically
c)
they break apart into separate elements
d)
they react chemically to form a salt
17.
A hydrogen ion, H+, is the same as a(n):
a)
neutron
b)
electron
c)
proton
d)
hydroxide ion
18.
What is the approximate pH of seawater?
a)
2
b)
5
c)
7
d)
9
19.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
20.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
21.
What is another name for a base?
a)
Acid
b)
Alkaline
c)
pH
22.
Chalky, soapy, slippery
a)
Acid
b)
Base
c)
Neutral
d)
Indicator
23.
A compound that changes color when it is in contact with an acid or base is called______________
a)
Acid
b)
Base
c)
Neutral
d)
Indicator
24.
On the pH scale what numbers are neutrals?
a)
8-14
b)
0-7
c)
7
d)
1
25.
Pollution causes the pH of rain water fall below 6. What is such type of rain called?
a)
Acid rain
b)
polluted rain
c)
low pH rain
26.
What pH is the strongest base?
a)
1
b)
7
c)
4
d)
14
27.
What is the pH of pure water?
a)
11
b)
4
c)
7
28.
Which has a pH above 7?
a)
Acid
b)
Base
29.
Which has a pH below 7?
a)
Acid
b)
Base
30.
Drano is considered a(n)
a)
acid
b)
base
c)
neutral
100 %
