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Acids, Bases and the pH Scale

Total questions: 33

Worksheet time: 20mins

Name
Class
Date
1.

Which of the following is a property of both acids and bases?

a)

Corrosive

b)

Sour

c)

Bitter

d)

High pH

2.

Which of the following substances is acidic?

a)

Pure Water

b)

Black Coffee

c)

Ajax Cleaner

d)

Toothpaste

3.

Which of the following substances is basic (alkaline)?

a)

Pure Water

b)

Black Coffee

c)

Coke

d)

Toothpaste

4.

Which of the following substances is the most basic (alkaline)?

a)

Ajax Cleaner

b)

Toothpaste

c)

Caustic Soda

d)

Mr Muscle Oven Spray

5.

Which of the following substances has the lowest pH?

a)

Ajax Cleaner

b)

Toothpaste

c)

Caustic Soda

d)

Mr Muscle Oven Spray

6.

Which of the following substances has the highest pH?

a)

Ajax Cleaner

b)

Toothpaste

c)

Cloudy Ammonia

d)

Mr Muscle Oven Spray

7.

Which of the following substances is the least basic?

a)

Ajax Cleaner

b)

Sea water

c)

Cloudy Ammonia

d)

Mr Muscle Oven Spray

8.

Which of the following substances is the least acidic?

a)

Black coffee

b)

Milk

c)

Hydrochloric acid

d)

Vinegar

9.

Which of the following substances is the most acidic?

a)

Black coffee

b)

Milk

c)

Hydrochloric acid

d)

Vinegar

10.

Which of the following substances has the highest pH?

a)

Black coffee

b)

Milk

c)

Coke

d)

Vinegar

11.

Which of the following substances has the lowest pH?

a)

Black coffee

b)

Milk

c)

Coke

d)

Vinegar

12.
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
13.
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
14.
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
15.
What would be considered the weakest base? 
a)
8
b)
14
c)
7.8
d)
11.6
16.
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
17.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
18.

Tastes bitter

a)

Acids

b)

Bases

c)

Salts

d)

All

19.
Since some acids seemingly "eat away" certain substances, acids are ____.
a)
bitter
b)
sliipery
c)
corrosive
d)
weak
20.

Which is the stronger base?

a)

pH 1

b)

pH 4

c)

pH 8

d)

pH 13

21.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). This reaction is called a ___________ reaction.

a)

Neutralisation

b)

Combustion

c)

Addition

d)

Ionic

22.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). Is the equation balanced?

a)

Yes

b)

No

23.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). Is this a chemical or physical reaction?

a)

Chemical

b)

Physical

24.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). For everyone NaOH compound that reacts, how many H2O compounds are produced?

a)

1

b)

2

c)

3

d)

4

25.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). What is the state of the hydrochloric acid that reacts?

a)

Aqueous

b)

Solid

c)

Liquid

d)

Gas

26.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). What is the state of the water that is produced?

a)

Aqueous

b)

Solid

c)

Liquid

d)

Gas

27.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). What is the state of the sodium chloride (NaCl) that is produced?

a)

Aqueous

b)

Solid

c)

Liquid

d)

Gas

28.

What does the state aqueous mean?

a)

Particles are fixed and cannot move

b)

Particles have some energy and can move a little bit.

c)

Dissolved in water

29.

Above is a reaction between an acid (hydrochloric acid (HCl)) and base (NaOH). Is water (H2O) a mixture, compound or element?

a)

Mixture

b)

Compound

c)

Element

30.

If 500 mL of a substance with a pH of 6 reacted with 500 mL of a substance with the pH of 8. The substance would be

a)

Basic

b)

Neutral

c)

Acidic

31.

If 1L of a substance with a pH of 6 reacted with 500 mL of a substance with the pH of 8. The substance would be

a)

Basic

b)

Neutral

c)

Acidic

32.

If 500 mL of a substance with a pH of 6 reacted with 1 L of a substance with the pH of 8. The substance would be

a)

Basic

b)

Neutral

c)

Acidic

33.

If I split a strong acid on the floor, what would I mix it with on the floor before cleaning it up?

a)

A large quantity of a weak base

b)

A large quantity of a weak acid

c)

A large quantity of a strong base

d)

A large quantity of a strong acid

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