wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

8.6D Acids and Bases

Total questions: 136

Worksheet time: 2hrs 42mins

Name
Class
Date
1.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
2.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
3.
Which of the following is most likely to be basic:
a)
Lemon juice
b)
Vinegar
c)
Laundry detergent
d)
Coke
4.

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)

7

c)

9

d)

5

5.

Stronger acids have a pH closer to...

a)

7

b)

14

c)

0

d)

9

6.

Weaker bases have a pH closer to...

a)

8

b)

14

c)

0

d)

4

7.

Which of these pH values represent an acid?

a)

4

b)

8

c)

10

d)

12

8.

If I add more chicken soup to this setup, what will happen to the pH?

a)

It will increase and get closer to 7

b)

It will decrease and get closer to 0

c)

It will stay the same and not change

9.

If I add more water to this setup, what will happen to the pH?

a)

It will increase and get closer to 7

b)

It will decrease and get closert to 0

c)

It will stay the same and not change

10.

Milk is a very weak acid. What might its pH value be?

a)

6.5

b)

7.8

c)

4.2

d)

12.2

11.

When an acid is dissolved in water, it turns red litmus paper blue.

a)

True

b)

False

12.

Which of the following are properties of acids?

a)

They conduct electricity when dissolved in water

b)

They taste sour

c)

They react with metals to produce hydrogen gas

d)

All of the answer choices are correct

13.

Which of the following is an acid?

a)

vinegar

b)

bleach

c)

sugar in water

d)

starch in water

e)

toothpaste in water

14.

Which of the following is a property of a base?

a)

bitter taste

b)

reacts with metals

c)

salty

d)

sour taste

15.

Bases have many uses. They are mainly used to make

a)

cleaning products

b)

soaps

c)

concrete

d)

all of the answer choices

16.

All bases have a sour taste.

a)

True

b)

False

17.

Which of the following pH values represents a base?

a)

2.1

b)

4.6

c)

6.8

d)

8.1

18.

The strongest bases have pH values close to

a)

0

b)

14

c)

7

d)

5

19.

Which of the following is a base?

a)

baking soda in water

b)

orange juice

c)

vinegar

d)

lemonade

20.

Ocean water is only slightly basic. What might its pH value be?

a)

5

b)

8

c)

12

d)

2

21.

Bases turn blue litmus paper red.

a)

True

b)

False

22.

If the substance is neutral, what would the pH be?11

a)

3

b)

5

c)

7

d)

9

e)

11

23.
Acids are what range on the pH scale?
a)
0-14
b)
0-6.99
c)
7
d)
7.1-14
24.
Bases are what range on the pH scale?
a)
0-6.99
b)
7
c)
7.1-14
d)
0-14
25.
7 on the pH scale means that it is...
a)
Acidic
b)
Basic
c)
Neutral
26.
Lemon juice is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
27.
Soap is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
28.
Water is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
29.
When found in food, acids are ________
a)
Sour
b)
Bitter
c)
Salty
d)
Slippery
30.
When found in food, bases are _______.
a)
Sour
b)
Bitter
c)
Salty
d)
Soggy
31.
Drain cleaner has a pH of 13. What is drain cleaner?
a)
An acid.
b)
A strong base.
c)
Neutral.
d)
A weak base.
32.
A pH scale is...
a)
A  corrosive substance that says a substance is an acid.
b)
An indicator that tells if a substance is an acid or base. 
c)
A blue litmus paper.
d)
A red litmus paper.
33.
What does corrosive mean?
a)
That a substance is a strong base.
b)
That a substance is neutral.
c)
That a substance can easily wear away
d)
The substance is the strongest acid
34.
What are properties of acids?
a)
Bitter, slippery, ph above 7
b)
Sour, reacts with metals, ph below 7
c)
Sour, reacts with metals, ph above 7
d)
Bitter, ph of 7, does not react with metals
35.
What are properties of a base?
a)
Slippery, bitter, does not react with metals, pH above 7.
b)
Slippery, bitter, reacts with metals, pH below 7.
c)
Sour, reacts with metals, pH below 7
d)
Sour, reacts with metals, pH above 7.
36.
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 _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
37.
The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is
a)
neutral
b)
basic
c)

acidic or basic.

d)
acidic
38.
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
39.
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
40.
What would be considered the weakest base? 
a)
8
b)
14
c)
7.8
d)
11.6
41.
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
42.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
43.
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
44.
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
45.
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
46.
 bicarbonate of soda (pH 9) be used to treat a bee sting.
 A bee sting is ________.
a)
Acidic
b)
Basic
c)
Neutral
d)
salt
47.

Weak acids have a lower pH than stronger acids?

a)

True

b)

False

48.

Most foods would be considered

a)

bases

b)

acids

c)

neutral

49.

Litmus is a common

a)

catalyst

b)

indicator

c)

enzyme

d)

base

50.
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
51.
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
a)
is a base.
b)
has a neutral pH.
c)
is an acid.
d)
does not have a pH.
52.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
53.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
54.
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
55.
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
56.
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
57.
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 _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
58.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
59.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
60.
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
61.
Soap is a weak base.  What is true about the taste of bases?
a)
they taste sour
b)
they taste sweet
c)
they taste bitter
d)
they taste salty
62.
What is the approximate pH of seawater?
a)
2
b)
5
c)
7
d)
9
63.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
64.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
65.
Chalky, soapy, slippery
a)
Acid 
b)
Base
c)
Neutral
d)
Indicator
66.
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
67.
On the pH scale what numbers are bases?
a)
8-14
b)
0-7
c)
7
d)
1
68.
On the pH scale what numbers are acids?
a)
8-14
b)
0-7
c)
7
d)
1
69.
On the pH scale what numbers are neutrals?
a)
8-14
b)
0-7
c)
7
d)
1
70.
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
71.

William was conducting a science experiment and found that a certain substance had a pH less than 7. This substance is likely a(n) ______.

a)

Acid

b)

Alkaline

c)

Base

d)

Buffer

72.

David was conducting a science experiment and found a substance with a pH greater than 7. This substance is a(n) _______.

a)

Base

b)

Acid

c)

Buffer

d)

Water

73.

Aiden, Benjamin, and Roman are conducting a science experiment to determine the acidity of various household items. They have narrowed down their options to Baking Soda, Lemon Juice, Black Coffee, and Milk. According to their findings, which item is the most acidic?

a)

Baking Soda

b)

Lemon Juice

c)

Black Coffee

d)

Milk

74.

Anika, Samuel, and Grace were conducting a science experiment. They had lemon juice, hydrochloric acid, cabbage, and milk. According to the pH range, which substance did they find to be more acidic than lemon juice?

a)

Hydrochloric acid

b)

cabbage

c)

milk

d)

phosphoric acid

75.

Benjamin, Avery, and Hannah are conducting a science experiment in their school lab. They are using bleach, which is a strong base. Can you tell them what the pH level of bleach is?

a)

13

b)

7

c)

1

d)

2

76.

Samuel, Michael, and Henry are in a chemistry lab. Samuel has a strong acid and Michael has an equally strong base. What might happen if they mixed these two substances?

a)

There would be an explosive chemical reaction.

b)

The acid Samuel has would destroy the base Michael has.

c)

The base Michael has would destroy the acid Samuel has.

d)

They'd wind up with a pH-neutral substance.

77.

During a biology class, Nora, Ethan, and Mason were discussing the pH level of human blood. They learned that it falls between 7.35 and 7.45. Based on this information, how would you best describe human blood?

a)

strongly acidic

b)

slightly acidic

c)

strongly basic

d)

slightly basic

78.

Emma and Abigail are conducting a chemistry experiment. They want to produce an (OH) ion in their solution. Which chemical should they mix with water to achieve this?

a)

Acid

b)

Base

79.

Samuel was conducting a chemistry experiment in the lab. He had a few substances in front of him and he was wondering what would happen if he mixed an acid with one of them. Zoe suggested that acids react with

a)

water to produce bases and salts

b)

salts to produce bases and water

c)

neither bases, salts nor water

d)

bases to produce salts and water

80.

Kai found a substance in the chemistry lab and observed the following characteristics:


It had a very bitter taste when he put a small amount on his tongue

It felt slippery when Harper touched it

When Priya dissolved it in water, it produced OH- ions


How should they classify this substance?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

81.

Arjun, Avery, and Aria were conducting a science experiment. They found a substance with the following characteristics:

Very sour taste

Feels soft to the touch

Produces H+ ions when dissolved in water

How should they classify this substance?

a)

acids

b)

bases

c)

enzyme

d)

fatty acid

82.
Which has a pH below 7?
a)
Acid
b)
Base
83.
Which has a bitter taste?
a)
Base
b)
Acid
c)
flagella
d)
cila
84.
Which has a slippery texture?
a)
Acid
b)
Base
85.
Turns litmus red
a)
Acids
b)
Bases
c)
All
86.

What pH is the strongest base?

a)

1

b)

7

c)

4

d)

14

87.

What colour does a base turn red litmus paper?

a)

Red

b)

Blue

88.
What methods can you use to measure the pH of a solution?
a)
Observing color or clarity
b)
Measuring mass or volume
c)
Measuring density or electrical conductivity
d)
Using acid base-indicators or pH meters
89.
Which of the following is most likely to be basic:
a)
Lemon juice
b)
Vinegar
c)
Laundry detergent
d)
Coke
90.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
91.
Why are bases useful as cleaning products?
a)
They dissolve fats and oils
b)
they are corrosive, so they eat anything
c)
they don't mix with water
d)
since bases are slippery, they slip dirt off of surfaces
92.
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
93.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
94.
What is a base?
a)
Has a pH of 3
b)
Has a pH of 7
c)
substances that are slippery to the touch; turns red litmus paper blue
95.
Which of the following statements about acids is true?
a)
They taste sweet.
b)
They taste sour.
c)
They have a pH between 8-14.
96.
Which item is an acid?
a)
Drain cleaner
b)
Ammonia
c)
An orange.
97.
What does a pH scale do?
a)
Tells if a substance is an acid or base
b)
Measures the strength and weakness of acids and bases
c)
Both statements are correct
98.
You can eat or drink an acid.
a)
True 
b)
False
99.
Which of the following describes a battery?
a)
Acid 
b)
Base
100.
What is the pH of water?
a)
11
b)
4
c)
7
101.

Which of the following substances is acidic?

a)

baking soda

b)

lemon-lime soda

c)

distilled water

d)

soap

102.

What substance would do the best job of cleaning pots and pans?

a)

A substance with a pH of 7

b)

A substance with a pH of 4

c)

A substance with a pH of 2

d)

A substance with a pH of 8

103.

. What is a property of bases?

a)

Slippery touch

b)

Sour taste

c)

Ability to dissolve metal

d)

Ability to form hydronium ions

104.

How do acidic solutions taste?

a)

Delicious

b)

Sweet

c)

Bitter

d)

Sour

105.

Weaker bases have a pH closer to...

a)

8

b)

0

c)

14

d)

4

106.

Stronger acids have a pH closer to...

a)

7

b)

0

c)

14

d)

9

107.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-5

d)

1-14

108.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
109.

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

a)

Milk

b)

Orange Juice

c)

Pure water

d)

Bleach

110.

These can burn you if they are strong enough.

a)

Acids

b)

Bases

c)

Water

d)

Acids & Bases

111.
Acids react with
a)
water to produce bases and salts
b)
salts to produce bases and water
c)
neither bases, salts nor water
d)
bases to produce salts and water
112.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
113.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
114.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
d)
lye
115.

The picture shows a bottle of white vinegar. Is this substance acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

116.
Is this substance acidic, basic, or neutral?
a)
Acidic
b)
Basic
c)
Neutral
117.
Which statements are properties of an acid?
1. Reacts with ammonium sulfate to form ammonia
2. Turns red litmus blue
a)
1 & 2
b)
1 only
c)
2 only
d)
Both of them are wrong
118.

A type of chemical that forms solutions that taste sour, due to high concentrations of positive hydrogen ions

a)

acid

b)

base

c)

salt

d)

pH

119.

A type of chemical that forms solutions that taste sour, due to high concentrations of positive hydrogen ions

a)

acid

b)

alkali

c)

salt

d)

pH

120.

Which is the correct set of acid properties?

a)

sour taste, reacts with metals, change litmus paper blue

b)

sour taste, reacts with metals, change litmus paper red

c)

bitter taste, slippery, change litmus paper red

d)

sour taste, slippery, change litmus paper red

121.

Select ALL the properties of acids:

a)

taste sour

b)

turn litmus red

c)

give off H+ ions in water

d)

can be corrosive to metals and tissue (skin)

122.

H3PO4 is an example of a ...

a)

acid

b)

base

c)

salt

d)

non-electrolyte

123.
What are properties of acids?
a)
Bitter, slippery, ph above 7
b)
Sour, Conducts electricity, ph below 7
c)
Sour, reacts with metals, ph above 7
d)
Bitter, ph of 7, does not react with metals
124.
H3PO4 is an example of a ...
a)
acid
b)
base
c)
salt
125.
Which of the following statements about acids is true?
a)
They taste sweet.
b)
They taste sour.
c)
They have a pH between 8-14.
126.
When found in food, bases are _______.
a)
Sour
b)
Bitter
c)
Salty
d)
Soggy
127.
Select the true answer.
a)
Acids are red and bases are blue respectively because of the ionic and covalent bonds between them
b)
Alkalis are red and acids are blue
c)
Acids and alkalis are both colorless and odorless because they are covalent compounds
d)
Acid and alkali solutions turn red and blue respectively when the universal indicator is added
128.

Bases feel

a)

dry

b)

moist

c)

rough

d)

slippery

129.

Bases taste

a)

bitter

b)

sour

c)

like candy

130.
Which describes a base?
a)
Turns blue litmus red
b)
Turns red litmus blue
c)
pH of 7
d)
pH of 3
131.
What is a property of bases?
a)
Slippery touch
b)
Sour taste
c)
Ability to dissolve metal
d)
Ability to form hydronium ions
132.

Bases taste

a)

bitter

b)

sour

c)

sweet

d)

salty

133.
Which has a slippery texture?
a)
Acid
b)
Base
134.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
135.
Which of the following is NOT a property of a base? 
a)
Conduct electricity
b)
Change the color of an indicator solution
c)
Taste sour
d)
Are slippery when mixed with water
136.
Soap is a weak base.  What is true about the taste of bases?
a)
they taste sour
b)
they taste sweet
c)
they taste bitter
d)
they taste salty

Similar Resources on Wayground

Mesurement test review

135 questions

Mesurement test review

quiz

Worksheet

•

7th Grade

Quizz culture générale

138 questions

Quizz culture générale

quiz

Worksheet

•

1st Grade - University

SCIENCE FINAL REVIEW

135 questions

SCIENCE FINAL REVIEW

quiz

Worksheet

•

5th - 8th Grade

Solar system

137 questions

Solar system

quiz

Worksheet

•

8th Grade

Plate Tectonics and Natural Disasters

131 questions

Plate Tectonics and Natural Disasters

quiz

Worksheet

•

6th Grade

Office Hours Reteach: Scientific Variables

133 questions

Office Hours Reteach: Scientific Variables

quiz

Worksheet

•

8th Grade

First Semester Final Review

134 questions

First Semester Final Review

quiz

Worksheet

•

7th Grade

Quiz về Năng lượng và Vật lý

134 questions

Quiz về Năng lượng và Vật lý

quiz

Worksheet

•

6th Grade