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Science Form 2_Chap 6.1 Properties of Acids and Alkalis

Total questions: 35

Worksheet time: 25mins

Name
Class
Date
1.
Which of the following is NOT a property of an acid?
a)
Tastes sour
b)
Corrosive
c)
Changes the colour of blue litmus paper to red
d)
Has a pH value higher than 7
2.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
3.
Which of the following is NOT a property of an alkali?
a)
Tastes bitter
b)
Corrosive
c)
Changes the colour of blue litmus paper to red
d)
Has a pH value higher than 7
4.
Which of the following is a strong alkali?
a)
Sodium hydroxide
b)
Potassium nitrate
c)
Sodium nitrate
d)
Potassium sulphate
5.
Which of the following is NOT a strong acid?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
6.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
7.
What is the pH value of toothpaste?
a)
1
b)
7
c)
14
d)
8
8.
What is the pH value of pure water?
a)
7
b)
14
c)
4
d)
8
9.
What type of acid can be found in a car battery?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
10.
What type of acid can be found in carbonated drinks?
a)
Carbonic acid
b)
Tartaric acid
c)
Citric acid
d)
Sulphuric acid
11.

What colour does litmus paper turn when added to an alkali?

a)

Blue

b)

Red

c)

Green

d)

Colourless

12.

What colour does litmus paper turn when added to an acid?

a)

Blue

b)

Red

c)

Green

d)

Colourless

13.

What other laboratory substance can you use to test if colourless substance is an acid or an alkali?

a)

Catalyst

b)

Salt

c)

Universal Indicator

d)

Water

14.

Which substance is an acid?

a)

Water

b)

Bleach

c)

Orange juice

d)

Washing powder

15.

Which pH levels indicated a strong acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

16.

Which pH level indicates a weak alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

17.

Which pH level indicates a weak acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

18.

Which pH level indicates a strong alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

19.

Acids taste...

a)

Sweet

b)

Salty

c)

Sour

d)

Smooth

20.

Alkalis feel...

a)

Rough

b)

Granulated

c)

Soapy

d)

Smooth

21.

Strong acids and alkalis are...

a)

Sour

b)

Sweet

c)

Corrosive/Caustic

d)

Burn litmus paper

22.

What does this hazard symbol mean?

a)

toxic

b)

flammable

c)

corrosive

d)

explosive

23.

What pH range would you get for an acid?

a)

0-6

b)

7

c)

7-14

d)

2-10

24.
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
25.
a)

PH scale

b)

pH ruler

c)

pH scale

d)

pH statistical tables

26.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
27.

Acid in soft drink:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

28.

Acid in our stomach:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

29.

Acid in car battery:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

30.

Acid in vinegar:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

31.

Which substance is alkali?

a)

Toothpaste

b)

Vinegar

c)

Lemon juice

d)

Soft drink

32.

The color of universal indicator in pure water:

a)

Red

b)

Blue

c)

Purple

d)

Green

33.

Something that can be used to identify acid/alkali:

a)

Indicator

b)

Oxidator

c)

Reductor

d)

Terminator

34.

The color of universal indicator in hydrochloric acid:

a)

Red

b)

Blue

c)

Purple

d)

Green

35.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk

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