WorksheetsAcids and Bases Review
Total questions: 33
Worksheet time: 17mins
Name
Class
Date
1.
What is the smallest part of an element that still has the properties
of that element?
of that element?
a)
an atom
b)
a compound
c)
a molecule
d)
a nucleus
2.
Ammonia is a common base used in household cleaning products. What color will litmus paper turn when placed in a solution of ammonia?
a)
blue
b)
yellow
c)
green
d)
red
3.
Based on its pH level, which of the following is an acid?
a)
sea water, pH=8.25
b)
detergent, pH=10
c)
milk, pH=6.5
d)
human saliva, pH=7
4.
Distilled water has a pH of 7. According to the pH scale, it is classified as_____________.
a)
base
b)
neutral
c)
an acid
d)
a solution
5.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen (H+) ions
d)
hydroxide (OH-) ions
6.
Which will form hydroxide ions in solution?
a)
a base
b)
an acid
c)
an alloy
d)
a neutral substance
7.
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.
8.
Any substance that produces hydroxide ions in water is known as _______________.
a)
an acid
b)
a hydrogen ion
c)
a base
d)
a neutral
9.
Antacids are used to fight stomach acid and relieve heartburn. Which of the following would make the best antacid?
a)
a weak acid
b)
a base
c)
a strong acid
d)
a neutral substance
10.
If vinegar and lemon juice are weak acids, what do you think is generally true about the taste of acidic foods? They taste__________.
a)
bitter
b)
sweet
c)
sour
d)
salty
11.
Alkalis have a high pH. Which of the terms best describes an alkali?
a)
an acid
b)
a base
c)
a neutral substance
d)
a polymer
12.
If the pH of a substance is 12.4, that substance would be a ____________.
a)
strong acid
b)
strong base
c)
weak base
d)
weak acid
13.
A 4th grade class noticed the plants and animals in a nearby lake have recently begun to decrease. When the class tested the water, they found it had a pH of 4.5. What does this level indicate?
a)
The lake has become too acidic to support life.
b)
The lake has become too basic to support life.
c)
The lake does not have enough dissolved oxygen to support life.
d)
The lake contains too much suspended sediment to support life.
14.
Which of the following substances is the strongest acid?
a)
soda, pH 3
b)
tomatoes, pH 4.5
c)
stomach acid, pH 2
d)
coffee, pH 5
15.
Which pH reading would indicate the presence of a strong base?
a)
2
b)
6
c)
9
d)
13
16.
Which best describes the particles of matter in a gas?
a)
The particles are tightly packed together, but vibrate in place.
b)
The particles are close together, but can slide past one another.
c)
The particles are spread far apart, but cannot move.
d)
The particles are spread far apart and can move freely.
17.
What type of liquid would taste bitter and feel slippery?
a)
a base
b)
an acid
c)
water
d)
citrus juice
18.
Which of the following is true of 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.
19.
Litmus paper changes color to indicate if a solution is acidic, neutral, or basic. In an acidic solution, litmus paper turns ___________.
a)
purple
b)
red
c)
blue
d)
pink
20.
The given table lists the pH value of some common substances.
Which is the base among the given substances?
Which is the base among the given substances?
a)
battery acid
b)
vinegar
c)
black coffee
d)
baking soda
21.
If battery acid spilled on the garage floor, which of the following could you use to neutralize it?
a)
baking soda
b)
vinegar
c)
lemon juice
d)
oil
22.
Mixing an acid with a base will form:
a)
an alloy
b)
a salt
c)
a polymer
d)
an isotope
23.
Which number on the pH scale represents a base?
a)
2
b)
8
c)
5
d)
7
24.
Which is a common characteristic of bases?
a)
sour taste
b)
bitter taste
c)
pH lower than 7
d)
pH of 7
25.
Vinegar and lemon juice are weak acids. What is generally true about the taste of acids?
a)
They taste bitter.
b)
They taste sweet.
c)
They taste sour.
d)
They taste salty.
26.
Lemon juice has a pH of 2. What does this indicate about lemon juice?
a)
It is an acid.
b)
It is a base.
c)
It is a salt.
d)
It is neutral.
27.
Dish detergent has a pH of 10. What does this indicate about dish detergent?
a)
It is an acid.
b)
It is a base.
c)
It is a salt.
d)
It is neutral.
28.
The pH values of various solutions are shown in the table below. Which is the acid among the given substances?
a)
soap solution
b)
tomato soup
c)
baking soda
d)
drain cleaner
29.
The given table lists the pH value of some common substances.
Which of the following substances is the most acidic?
Which of the following substances is the most acidic?
a)
soap
b)
bleach
c)
lemon juice
d)
tomato juice
30.
Baking soda has a pH between 8 and 9. What is one reason that baking soda is often kept on hand in chemistry labs?
a)
It speeds up chemical reactions.
b)
It can help neutralize spilled bases
c)
It can help neutralize spilled salts.
d)
It can help neutralize spilled acids.
31.
Distilled water is a neutral substance. What is its pH value?
a)
0
b)
4
c)
7
d)
14
32.
A student adds a few drops of acid to a beaker of water having pH 7. What is the most likely pH of the resulting solution?
a)
6
b)
9
c)
11
d)
13
33.
Identify the product with the highest pH value.
a)
ammonia
b)
hand soap
c)
water
d)
lemon juice
100 %
