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PROPERTIES OF ACID AND ALKALI

Total questions: 34

Worksheet time: 18mins

Name
Class
Date
1.

What is the pH of distilled water?

a)

pH 12

b)

pH 3

c)

pH 8

d)

pH 7

2.

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

a)

Blue

b)

Red

c)

Green

d)

Colourless

3.

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

a)

Blue

b)

Red

c)

Green

d)

Colourless

4.

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

5.

A wasp sting is alkali. Which substance would neutralise the sting?

a)

Vinegar

b)

Bleach

c)

Baking soda

d)

Distilled water

6.

Which substance is an acid?

a)

Water

b)

Bleach

c)

Orange juice

d)

Washing powder

7.

Which pH levels indicated a strong acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

8.

Which pH level indicates a weak alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

9.

Which pH level indicates a weak acid?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

10.

Which pH level indicates a strong alkali?

a)

1-3

b)

4-6

c)

8-11

d)

12-14

11.

Acids taste...

a)

Sweet

b)

Salty

c)

Sour

d)

Smooth

12.

Alkalis feel...

a)

Rough

b)

Granulated

c)

Soapy

d)

Smooth

13.

Strong acids and alkalis are...

a)

Sour

b)

Sweet

c)

Corrosive/Caustic

d)

Burn litmus paper

14.

What does this hazard symbol mean?

a)

toxic

b)

flammable

c)

corrosive

d)

explosive

15.

What pH range would you get for an acid?

a)

0-6

b)

7

c)

7-14

d)

2-10

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.
a)

PH scale

b)

pH ruler

c)

pH scale

d)

pH statistical tables

18.
What is the pH value of vinegar?
a)
1
b)
7
c)
4
d)
11
19.

The pH of pure water

a)

5.6

b)

7.0

c)

8.1

d)

0.0

20.

Acid in our stomach:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

21.

Acid in soft drink:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

22.

Acid in car battery:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

23.

Acid in vinegar:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

24.

Which substance is acid?

a)

Toothpaste

b)

Vinegar

c)

Soap

d)

Ammonia

25.

Which substance is alkali?

a)

Toothpaste

b)

Vinegar

c)

Lemon juice

d)

Soft drink

26.

The color of litmus in acid:

a)

Red

b)

Blue

c)

Purple

d)

Green

27.

The color of litmus in alkali:

a)

Red

b)

Blue

c)

Purple

d)

Green

28.

The color of universal indicator in pure water:

a)

Red

b)

Blue

c)

Purple

d)

Green

29.

Acids taste .....

a)

sour

b)

bitter

c)

sweet

d)

umami

30.

Rain water is slightly acidic. What is its pH?

a)

1.0

b)

5.6

c)

7.0

d)

8.2

31.

Indigestion can be treated by drinking ....

a)

water

b)

antacid

c)

vinegar

d)

sodium hydroxide

32.

Reaction between acid and alkali producing salt and water:

a)

Combustion

b)

Neutralization

c)

Precipitation

d)

Decomposition

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

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