Quiz about 7: pH Scale

Question 1

A(n) ______ is a substance with a pH less than 7

Accepted Answer

Acid

Answer

Alkaline

Answer

Base

Answer

Buffer

Question 2

A(n) _______ is a substance with a pH greater than 7.

Accepted Answer

Base

Answer

Acid

Answer

Buffer

Answer

Water

Question 3

The pH scale is a range from:

Accepted Answer

0-14

Answer

1-7

Answer

1-14

Answer

1-20

Question 4

A solution with a pH of 3.6 would be...

Accepted Answer

Acid

Answer

Base

Answer

Neutral

Answer

Acid and Base

Question 5

A solution with a pH of 8.6 would be...

Accepted Answer

Base

Answer

Acid

Answer

Neutral

Answer

Acid and Base

Question 6

Which is most acidic?

Accepted Answer

Lemon Juice

Answer

Baking Soda

Answer

Black Coffee

Answer

Milk

Question 7

Tastes Sour

Accepted Answer

Acids

Answer

Bases

Answer

Salts

Answer

All

Question 8

Tastes bitter.

Accepted Answer

Bases

Answer

Acids

Answer

Salts

Answer

All

Question 9

According to the pH range which substance is more acidic than lemon juice

Accepted Answer

Hydrochloric acid

Answer

cabbage

Answer

milk

Question 10

Bleach is a strong base, what is the pH level of bleach?

Accepted Answer

13

Answer

14

Answer

1

Answer

2

Question 11

Feels slippery.

Accepted Answer

Bases

Answer

Acids

Answer

All

Question 12

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

Accepted Answer

higher

Answer

lower

Answer

the same

Answer

none of the above

Question 13

On the pH scale higher numbers indicate

Accepted Answer

bases

Answer

acids

Question 14

Water is considered neutral because

Accepted Answer

it has an equal amount of H+ and OH- in solution

Answer

it has more H+ ions than OH-

Answer

it has more OH- ions than H+

Answer

it does not produce any ions

Question 15

pH stands for pondus hydrogenii which means

Accepted Answer

Potential of hydrogen

Answer

Potency of hydrogen

Answer

Plurality of hydrogen

Answer

Pleurisy of hydrogen

Question 16

What is the range of pH values in an acidic solution?

Accepted Answer

0-6

Answer

8-14

Answer

15-239058204958

Answer

pH = 7

Question 17

What is the range of pH values in an alkali (basic) solution?

Accepted Answer

8-14

Answer

0-6

Answer

15-239058204958

Answer

pH = 7

Question 18

Which is the stronger acid?

Accepted Answer

pH 1

Answer

pH 4

Answer

pH 8

Answer

pH 13

Question 19

This substance has more OH- ions.

Accepted Answer

Base

Answer

Acid

Answer

Neutral

Question 20

This substance has more H+ ions.

Accepted Answer

Acid

Answer

Base

Answer

Buffer

Answer

Water

Question 21

The pH scale is based on an increase or decrease by a power of ten.

Accepted Answer

True

Answer

False

Question 22

What does pH measure?

Accepted Answer

the amount of hydrogen (H⁺) ions

Answer

the amount of hydroxide (OH^-) ions

Answer

amount of water

Answer

all of the above

Question 23

A chemical has a pH = 6. It would be best described as

Accepted Answer

Weak acid

Answer

Strong acid

Answer

Strong base

Answer

Weak base

Question 24

What is an indicator in Chemistry?

Accepted Answer

Chemical dyes that can change colour according to pH

Answer

A small light bulb on a car

Answer

A chemical involved in a chemical reaction

Answer

A substance used to neutralise an acid

Question 25

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

Accepted Answer

Both of the solution are alkalis

Answer

Both of the solution are acids

Answer

The Baking soda is an acid and the Bleach is an alkali

Answer

The baking soda is an alkali and the Bleach is an acid.

Question 26

An alkaline material will have a pH of

Accepted Answer

>7

Answer

<7

Answer

=7

Question 27

If a material has more OH- ions, then it is a(n)

Accepted Answer

Alkaline

Answer

Acid

Answer

Neutral

Question 28

If a material has an equal amount of H+ and OH- ions, then it is a(n)

Accepted Answer

Neutral

Answer

Acid

Answer

Alkaline

Question 29

If a material has more H+ ions, then it is a(n)

Accepted Answer

Acid

Answer

Alkaline

Answer

Neutral

7: pH Scale

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