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ACIDS AND ALKALIS

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

WHAT ARE THE 2 CATEGORIES ALL ACIDS AND ALKALIS BE BROKEN INTO

a)

HEAVY AND LIGHT

b)

DARK AND LIGHT

c)

WEAK AND STRONG

d)

HEALTHY AND SICK

2.

DEFINE ACIDS

a)

HAVE MORE HYDROXIDE IN THEM THAN WATER MOLECULES

b)

HAVE MORE HYDROGEN MOLECULES IN THEM THAN WATER MOLECULES

c)

HAVE MORE CARBON DIOXIDE IN THEM THAN WATER MOLECULES

3.

DEFINE ALKALIS

a)

HAVE MORE HYDROXIDE IN THEM THAN WATER MOLECULES

b)

HAVE MORE HYDROGEN IN THEM THAN WATER MOLECULES

4.
Which of the following substances contain acid?
a)
An orange
b)
Bleach
c)
Distilled water
d)
Washing powder
5.
Which of the following substances contain an alkali?
a)
Baking powder
b)
Coca cola
c)
Distilled water
d)
Vinegar
6.
Which of the following pH numbers indicates a neutral substance?
a)
1
b)
5
c)
7
d)
14
7.
Which of the following pH numbers indicates a strong acid?
a)
1
b)
5
c)
7
d)
14
8.
Which of the following pH numbers indicate a strong alkali?
a)
1
b)
5
c)
7
d)
14
9.
Which of the following acids do we have in our stomach?
a)
Ethanoic acid
b)
Hydrochloric acid
c)
Nitric acid
d)
Sulphuric acid
10.
What colour is universal indicator in strong acid?
a)
Green
b)
Orange
c)
Purple
d)
Red
11.
What colour is universal indicator in a neutral solution?
a)
Green
b)
Orange
c)
Purple
d)
Red
12.
What colour is universal indicator in a strong alkali?
a)
Green
b)
Orange
c)
Purple
d)
Red
13.
Strong acids and strong alkalis are.......
a)
Able to turn blue litmus paper red
b)
Corrosive and/or caustic
c)
Sour
d)
Sweet
14.
What substance could you use to test if a substance is an acid or alkali?
a)
Indicator
b)
Salt
c)
Catalyst
d)
Water
15.
What happens to the pH of a acid during neutralisation?
a)
It stays the same
b)
It moves up towards pH 7
c)
It moves down to pH 1
d)
It lowers
16.
A wasp sting is alkaline. Which one of these substances would neutralise the sting?
a)
Vinegar
b)
Bleach
c)
Baking soda
d)
Pure water
17.
What two substance are formed when an acid and alkali react together in equal amounts?
a)
Salt and water
b)
Alkali and water
c)
Acid and water
d)
Acid and alkali
18.
Indigestion medicine is taken to neutralise excess stomach acid. What type of substance is this medicine?
a)
Alkali
b)
Acid
c)
Neutral 
19.

if a bee sting is acidic, what would you use to neutralize it?

a)

bread

b)

flour

c)

baking soda

d)

salt

e)

yeast

20.

Which indicator would be best to do a titration forming ammonium chloride? (ammonium chloride is acidic in solution)

a)

phenol red

b)

methyl orange

c)

phenolpthalein

d)

bromothymol blue

21.
Acids taste _________________.
a)
sour
b)
sweet
c)
spicy
d)
bitter
22.
Alkalis taste _________________.
a)
sour
b)
sweet
c)
spicy
d)
bitter
23.
Alkalis belong to a larger group of chemicals known as ______________. 
a)
bases
b)
compounds
c)
solutions
d)
solvents
24.
The image shows a PH scale. Which option indicates strong alkali? 
a)
a
b)
b
c)
c
d)
d
25.
The image shows a PH scale. Which option indicates strong acid? 
a)
a
b)
b
c)
c
d)
d
26.
The image shows a PH scale. Which option will you find hosehold soaps and shampoos? 
a)
a
b)
b
c)
c
d)
d
27.
When placed in an alkaline solution, blue litmus paper will ____________. 
a)
turns red
b)
remains blue 
c)
change colour
d)
turns green
28.
When placed in an alkaline solution, red litmus paper will ____________. 
a)
turns red
b)
remains blue 
c)
change colour
d)
turns green
29.
When placed in an acidic solution, red litmus paper will ____________. 
a)
turns red
b)
remains red
c)
change colour
d)
turns green
30.
"Universal indicator tell us how acidic or alkaline the solution is." What do you think? 
a)
True
b)
False
c)
Maybe 
31.

the following acids are examples of what kind of acids?

-Malic acids

-citric acids

-tartaric acids

a)

srong

b)

weak

c)

natural

d)

manufactured

32.

define eforvesant

a)

bubbling reaction to acid

b)

bubbling reaction to metal

c)

bubbling reaction to alkalis

33.

tartaric acids are found in

a)

apples

b)

grapes

c)

orange

d)

lemon

34.

malic acid is found in

a)

apples

b)

grapes

c)

lemon

d)

orange

35.

acid reaction:

acid + metal =

a)

water and salt

b)

water and ammonia

c)

metal salt and hydrogen gas

36.

acid + carbonate =

a)

metal salt and hydrogen gas

b)

water and carbon dioxide gas

c)

water and ammonia

37.

acid + hydroxide =

a)

metal salt and hydrogen gas

b)

water and ammonia

c)

water and carbon dioxide

38.

in a test for gasses, a lit splint goes out with the following gasses

a)

hydrogen gas

b)

oxygen gas

c)

chlorine gas

d)

carbon dioxide

39.

sodium hydroxide is used to make what?

a)

soaps

b)

drain cleaners

c)

washing powders

d)

all of the above

40.

what about potassium hydroxide?

a)

paint remover

b)

clothing dyes

c)

ink dyes

d)

lip-stick remover

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