wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Acids and Alkali

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

What is the meaning of the above hazard warning symbol?

a)

Corrosive

b)

Explosive

c)

Toxic

d)

Radioactive

2.

Acid in our stomach:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

3.

Acid in soft drink:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

4.

Acid in car battery:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

5.

Which substance is alkali?

a)

Toothpaste

b)

Vinegar

c)

Lemon juice

d)

Soft drink

6.

The color of litmus in acid:

a)

Red

b)

Blue

c)

Purple

d)

Green

7.

The color of litmus in alkali:

a)

Red

b)

Blue

c)

Purple

d)

Green

8.

Acids taste .....

a)

sour

b)

bitter

c)

sweet

d)

umami

9.

Indigestion can be treated by drinking ....

a)

water

b)

antacid

c)

vinegar

d)

sodium hydroxide

10.

Reaction between acid and alkali producing salt and water:

a)

Combustion

b)

Neutralization

c)

Precipitation

d)

Decomposition

11.

pH of alkali:

a)

0

b)

7

c)

below 7

d)

above 7

12.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-20

13.

What is the substance with a neutral pH of 7?

a)

Milk

b)

Water

c)

Orange Juice

d)

Blood

14.

Which substance is acid?

a)

Ammonia

b)

Toothpaste

c)

Vinegar

d)

Soap

15.

Alkalis feel...

a)

Rough

b)

Soapy

c)

Granulated

d)

Smooth

16.
A neutralization reaction will always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
17.

Acid + Alkali --> Salt + Water

a)

neutralization reaction

b)

synthesis

c)

decomposition

d)

single displacement

18.

Strong acids and strong alkalis are.......

a)

Able to turn blue litmus paper red

b)

Corrosive

c)

Sour

d)

Sweet

19.

Lemon contains acid or alkali or neutral

a)

Acid

b)

Alkali

c)

Neutral

20.

When you get a bee sting, what will you use to make you feel better ?

a)

Water

b)

Baking soda

c)

Milk

d)

Toothpaste

21.

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

a)

Blue

b)

Red

c)

Green

d)

Colourless

22.

Which of the following about properties of acid is not true?

a)

pH less than 7

b)

Tastes bitter

c)

Corrosive

d)

Turns blue litmus paper to red

23.

Which of the following will change the red litmus paper to blue?

a)

Sodium hydroxide

b)

Hydrochloric acid

c)

Sulphuric acid

d)

Nitric acid

24.

Sodium hydroxide is used

a)

to make fertilisers.

b)

to make battery.

c)

to cure gastritis.

d)

to make detergent.

25.

Hydrochloric acid + Sodium hyroxide  →\rightarrow   ____________ + Water

a)

Sodium sulphate

b)

Sodium chloride

c)

Sodium nitrate

26.

Nitric acid + __________  →\rightarrow  Sodium nitrate + Water

a)

Aluminium oxide

b)

Magnesium hydroxide

c)

Sodium hydroxide

27.

The technique used in neutralisation is called

a)

filtration.

b)

titration.

28.

What is the uses of calcium hydroxide in the soil?

a)

used to neutralise the acidity of the soil

b)

used to produce carbon dioxide

c)

used to give a lighter texture to the soil

d)

to make the soil more acidic

29.

An alkali is able to “cancel” out an acid. This process is also known as?

a)

balancing

b)

extraction

c)

overcome

d)

neutralisation

30.

In an experiment some pupils found that baking soda had a pH of about 9. Some people claim this substance can be used to treat bee stings. Bee stings must be

a)

acidic

b)

alkaline

c)

neutral

d)

life threatening

31.

Milk of magnesia is a medicine used to treat indigestion. Milk of magnesia is most likely to be

a)

alkali

b)

neutral

c)

from a cow

d)

acidic

32.

Rivers and lakes that have become acidic due to acid rain can be treated with _________ .

a)

calcium hydroxide

b)

sodium chloride

c)

potassium chloride

d)

hydrochloric acid

33.

Name the acid found naturally in citrus fruits.

a)

Ethanoic Acid

b)

Sulphuric Acid

c)

Citric Acid

d)

Hydrochloric Acid

34.

Ethanoic acid (vinegar) is commonly used for cooking.

a)

True

b)

False

35.

The diagram shows what happens when red and blue litmus papers are dipped in Solution X.


Which of the following substances could possible be solution X?

a)

Vinegar

b)

Lime juice

c)

Distilled water

d)

Sodium hydroxide

36.
What gas is released when an acid reacts with an reactive metal?
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Bromine
37.
Which of the following is NOT a strong acid?
a)
Ethanoic acid
b)
Nitric acid
c)
Hydrochloric acid
d)
Sulphuric acid
38.
What gas is released when an ammonium salt is heated together with an alkali?
a)
Sulphur
b)
Ammonia
c)
Carbon dioxide
d)
Oxygen
39.
In a neutralisation reaction, dilute hydrochloric acid is slowly added to a sodium hydroxide solution. What is the colour change at the end point if the indicator used is phenolphthalein?
a)
From colourless to pink
b)
From blue to green
c)
From pink to colourless
d)
From green to blue
40.
Which chemical can be used to neutralise a wasp sting?
a)
Slaked lime
b)
Alum
c)
Shampoo
d)
Vinegar

Similar Resources on Wayground

Earth Science Review

39 questions

Earth Science Review

quiz

Worksheet

•

6th - 7th Grade

Atomic structure and isotope-AH

40 questions

Atomic structure and isotope-AH

quiz

Worksheet

•

9th - 12th Grade

Science 6 1st Trimester Periodical Test Reviewer

45 questions

Science 6 1st Trimester Periodical Test Reviewer

quiz

Worksheet

•

6th - 8th Grade

Chemistry Final Test

36 questions

Chemistry Final Test

quiz

Worksheet

•

6th - 8th Grade

W.E.D. and Rocks/Minerals Review

41 questions

W.E.D. and Rocks/Minerals Review

quiz

Worksheet

•

6th - 9th Grade

Grade 8 8I Review

40 questions

Grade 8 8I Review

quiz

Worksheet

•

7th - 9th Grade

Physical & Chemical Reactions

40 questions

Physical & Chemical Reactions

quiz

Worksheet

•

7th Grade

Periodic table and conservation

35 questions

Periodic table and conservation

quiz

Worksheet

•

8th Grade