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Acids and Bases

Total questions: 60

Worksheet time: 2hrs 48mins

Name
Class
Date
1.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

2.

True or false: bases are sometimes called alkaline.

a)

True

b)

False

3.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

4.

True or false: a neutral solution has equal amounts of H+ and OH-.

a)

True

b)

False

5.

Which is true?

a)

pH of less than 7 is basic; pH of more than 7 is acidic

b)

pH of less than 7 is acidic; pH of more than 7 is basic

6.

Vinegar, fruit juice, and cola are examples of:

a)

strong acids

b)

strong bases

c)

strong bases

d)

weak acids

7.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

8.

HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

9.

Is laundry detergent an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

10.

Ammonia is found in many household products, including window cleaner. What is the pH of ammonia?

a)

It's acidic.

b)

It's basic.

c)

It's neutral.

11.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

12.

Water found near sources of air pollution tends to be:

a)

Acidic.

b)

Basic.

c)

Neither. Air pollution doesn't alter the pH of water.

13.

Vinegar is an example of:

a)

An acid.

b)

A base.

c)

Neither an acid nor a base.

14.

Stronger acids have a pH closer to...

a)

7

b)

0

c)

14

d)

9

15.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-5

d)

1-14

16.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
17.

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

a)

Milk

b)

Orange Juice

c)

Pure water

d)

Bleach

18.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
19.

What would be considered the weakest base?

a)

3

b)

14

c)

8.2

d)

11.6

20.

Which property is not associated with acids?

a)

Sour taste

b)

strong acids can burn you

c)

turns litmus paper blue

d)

reacts with metals

21.

Ammonia has a pH of 11. Ammonia is __________.

a)

an acid

b)

a base

c)

an element

d)

a metal

22.
Ranging from 0 to 14, a pH value indicates how acidic or basic a solution is.  Which of these pH values would be a strong acid?
a)
2
b)
6
c)
9
d)
13
23.
Which of the following is a pH for a strong base? 
a)
1
b)
8
c)
7
d)
13
24.

What type of paper is used to test for acids and bases?

a)

Red paper

b)

Blue paper

c)

Lined paper

d)

Litmus paper

25.

Tastes sour

a)

acid

b)

base

c)

neutral

d)

both acids & bases

26.

You test a solution with pH paper, and the paper turns blue. The solution is ______.

a)

neutral

b)

an acid

c)

a base

d)

an acid & a base

27.

What would be considered the strongest base?

a)

8

b)

14

c)

7.8

d)

11.6

28.

Tastes bitter.

a)

Acids

b)

Bases

c)

None of the following

d)

Acids & Bases

29.

These can burn you if they are strong enough.

a)

Acids

b)

Bases

c)

Water

d)

Acids & Bases

30.
Which has a slippery texture?
a)
Acid
b)
Base
31.
Turns litmus red
a)
Acids
b)
Bases
c)
All
32.

What colour does a base turn red litmus paper?

a)

Red

b)

Blue

33.
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
34.
Which of the following is most likely to be basic:
a)
Lemon juice
b)
Vinegar
c)
Laundry detergent
d)
Coke
35.
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
36.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
37.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
38.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
39.
Acids are what range on the pH scale?
a)
0-14
b)
0-6.99
c)
7
d)
7.1-14
40.
Bases are what range on the pH scale?
a)
0-6.99
b)
7
c)
7.1-14
d)
0-14
41.
Lemon juice is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
42.
Soap is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
43.
Water is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
44.
When found in food, acids are ________
a)
Sour
b)
Bitter
c)
Salty
d)
Slippery
45.
When found in food, bases are _______.
a)
Sour
b)
Bitter
c)
Salty
d)
Soggy
46.
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.
47.
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
48.
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
49.
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.
50.

True or false: a neutral solution has equal amounts of H+ and OH-.

a)

True

b)

False

51.
Compounds form when _______________.
a)
atoms of one element bond together
b)
atoms of two or more elements bond together
c)
molecules of one element are mixed together
d)
molecules of two or more elements are mixed together
52.
The pH of vinegar is 2.5.  Vinegar is a _____________.
a)
strong acid
b)
strong base
c)
weak base
d)
weak acid
53.
Any substance that produces hydroxide ions in water is known as _____________.
a)
an acid
b)
a hydrogen ion
c)
a base
d)
a neutral
54.
What is the most likely pH of a tube of toothpaste?
a)
3
b)
5
c)
7
d)
9
55.
Which of these substances is acidic?
a)
tap water
b)
lemon
c)
ammonia
d)
baking soda
56.
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.
57.
An extremely strong base would have a pH of:
a)
1
b)
7
c)
9
d)
14
58.
What might happen if buffers did not exist within the human body?
a)
Our blood and other bodily fluids might become too acidic or basic.
b)
Our stomach acid would not be able to break down food.
c)
We would not be able to process glucose within our cells.
d)
We would not be able to inhale oxygen into our lungs.
59.
This piece of pH paper has been dipped into:
a)
An acid
b)
A base
c)
A pH-neutral substance
d)
A buffer
60.
Why do metals dissolve when you dip them in acid?
a)
The buffers in the metal are eaten away by the acid.
b)
The electrons in the metal are stripped away by hydrogen ions.
c)
The hydrogen ions in the acid react with the hydroxyl ions in the metal.
d)
The acid reacts with the basic metal to form carbon dioxide gas and salt.

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