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Quizizz-Review ph Lab/Mystery Lab

Total questions: 21

Worksheet time: 10mins

Name
Class
Date
1.

Pure blood has a pH of 7. This is considered to be:

a)

Neutral

b)

Acidic

c)

Basic

d)

None of the above

2.

pH 5 is considered to be a:

a)

weak base

b)

strong base

c)

weak acid

d)

strong acid

3.

When red litmus paper turns blue...

a)

you are testing an acid

b)

you are testing a base

c)

you are testing a neutral

4.

When blue litmus paper turns red...

a)

you are testing a base

b)

you are testing a neutral

c)

you are testing an acid

5.

Which of the following is MOST acidic?

a)

13

b)

4

c)

2

d)

10

6.

Is there is a substance that tests at pH 8.4, which is the best description?

a)

It is slightly acidic

b)

It is slightly basic

c)

It is highly acidic

d)

It is highly basic

7.

The range for acidic substances is ______, and the range for basic substances is _____.

a)

0-14 for both

b)

0-6.9 - 7.1-14

c)

1-8, 10-14

d)

1-4, 6-10

8.

Which organ produces an acid to help with digestion?

a)

pancreas

b)

stomach

c)

small intestine

d)

liver

9.
What does a pH scale do?
a)
Tells you if a substance is an acid.
b)
Tells you if a substance is a base.
c)
Measures the strength or weakness of an acid or base.
d)
All of these are true.
10.
You can eat or drink an acid.
a)
True
b)
False
11.
What is the pH of distilled water?
a)
1
b)
4
c)
7
d)
11
12.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)

1-6

13.

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

14.

An acid

a)

is a substance that releases H+ ions when dissolved in water

b)

is a substance that does not release any ions when dissolved in water

c)

is a substance that releases OH- when dissolved in water

d)

releases an equal amount of OH- and H+ ions when dissolved in water

15.
The lower the pH, the greater the concentration of :
a)
OH-
b)
H+
16.

Which one of the following is an acid?

a)

NaOH

b)

NaCl

c)

HCl

d)

BaO

17.
If a solution is basic which ion will be more present?
a)

H+

b)

K+

c)

OH-

d)

H-

18.

Which of the following is true .

a)

Acids and bases form hydroxide ions in solution

b)

Acids form hydroxide ions and bases hydrogen ions in solution

c)

Acids form hydrogen ions in solution, bases do not form ions in solution

d)

Acids form hydrogen ions in solution and bases hydroxide ions

19.

A solution has a pH of 7.0.  What would happen to the pH if H+ ions were added?

a)

pH increase

b)

pH is not affected by the concentration of H+ ions

c)

pH would stay the same

d)

pH would decrease

20.

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

21.

Most chemical reactions in the human body occur within which pH range?

a)

0-5

b)

7

c)

5.5-9

d)

6.7-7.6

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