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ACID & BASE

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
2.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
3.

Select the name of the following acid: HCl

a)

Hydrochloric acid

b)

Chlorous acid

c)

Chloric acid

4.
What is the name of the following acid: H2SO4
a)
hydrosulfuric acid
b)
sulfuric acid
c)
sulfurous acid
d)
persulfuric acid
5.
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
6.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
7.

... are used to neutralise acid in the stomach.

a)

Toothpastes

b)

Bacterias

c)

Antacids

d)

More strong acids

8.

Which of these is a property of acidic solutions?

a)

they taste sour

b)

they feel slippery

c)

they are in many cleaning products

d)

they taste bitter

9.

What is the purpose of an "indicator"?

a)

changes color if a chemical reaction occurs

b)

changes color if a physical change occurs

c)

changes color in the presence of an acid or base

d)

changes color when a salt dissolves in water

10.

WHAT ARE THE PROPERTIES OF ACID ?

a)

Acids are corrosive, sour,

b)

Lemon

c)

Mint

d)

tastes bitter

11.
Which of the following substances contain acid?
a)
An orange
b)
Bleach
c)
Distilled water
d)
Washing powder
12.
Which of the following pH numbers indicate a strong alkali?
a)
1
b)
5
c)
7
d)
14
13.

How to neutralise wasp sting

a)

baking soda

b)

vinegar

c)

Lime water

d)

Drain cleaner

14.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
15.
Which of the following substances contain an alkali?
a)
Baking powder
b)
Coca cola
c)
Distilled water
d)
Vinegar
16.
Which of the following pH numbers indicates a neutral substance?
a)
1
b)
5
c)
7
d)
14
17.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
 hydrogen (H+) ions
d)
 hydroxide (OH-) ions
18.

Which of the following is acid?

a)
b)
c)
19.

Which of the following is alkali?

a)
b)
c)
20.

Pollution causes the pH of rain water fall below 5. What is such type of rain called?

a)

acid rain

b)

polluted rain

c)

low pH rain

d)

alkaline rain

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