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Course: Alhussan Chemistry — Stage 7
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Alhussan Chemistry — Stage 7

Chapter 1: The Particle Model and States of Matter

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Chapter 2: Elements, Compounds and Mixtures

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Chapter 3: Metals and Non-Metals

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Chapter 4: Chemical Reactions 1

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Chapter 5: Acids and Alkalis

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Chapter 6: The Earth and Plate Tectonics

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Quiz

Chemistry 5.1 Acids and alkalis — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
A bottle holds 250 cm³ of vinegar that is 5% acid. Volume of acid?
1250 cm³
12 cm³
50 cm³
238 cm³
2.
Litmus results for samples. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
3.
pH of household substances. What is the total of all the values?
Dr Dabour Hub Academy - figure 2
49
13
44
39
4.
pH of household substances. Which has the greatest value?
Dr Dabour Hub Academy - figure 3
Water
Vinegar
Oven cleaner
Lemon juice
5.
Lemon is 5.0 g acid per 100 g. Acid in 150 g of lemon?
750.0 g
7.5 g
30.0 g
155.0 g
6.
True or false? Vinegar is neutral.
True
False
7.
Which statement is NOT correct?
Pure water is neutral.
Acidity is a physical property.
Acidity is a chemical property.
Concentrated acids are corrosive.
8.
True or false? Pure water is neutral.
True
False
9.
Which is the correct definition of “Alkali”?
Salt from hydrochloric acid and sodium hydroxide.
H⁺ ion found in acids.
Soluble base with pH above 7 containing hydroxide ions.
Rain with pH below about 5.6 due to pollution.
10.
Which statement is NOT correct?
Pure water is acidic.
Litmus turns blue in alkali.
Vinegar contains acid.
Lemons and limes taste sour because of acids.
11.
Litmus results for samples. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
12.
Household products by type. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
13.
Lemon is 5.0 g acid per 100 g. Acid in 20 g of lemon?
1.0 g
25.0 g
100.0 g
4.0 g
14.
True or false? Corrosive substances are harmless.
True
False
15.
A bottle holds 1000 cm³ of vinegar that is 5% acid. Volume of acid?
200 cm³
50 cm³
950 cm³
5000 cm³
16.
9 of 20 samples turned litmus red. What percentage?
450%
11%
55%
45%
17.
Phenolphthalein is ____ in alkali.
yellow
red
pink
colourless
18.
Which term matches this definition? “A substance that changes colour to show whether a solution is acidic or alkaline.”
Indicator
Precipitate
Catalyst
Solvent
19.
7 of 15 samples turned litmus red. What percentage?
47%
8%
467%
53%
20.
True or false? Alkalis feel soapy.
True
False
21.
Acids in foods (g per 100 g). Which has the smallest value?
Dr Dabour Hub Academy - figure 6
Orange
Apple
Lemon
Tomato
22.
Acids in foods (g per 100 g). About how many times bigger is Lemon than Tomato?
Dr Dabour Hub Academy - figure 7
24.0
12.0
6.0
18.0
23.
True or false? Lemon juice is alkaline.
True
False
24.
Lemon is 6.0 g acid per 100 g. Acid in 20 g of lemon?
120.0 g
1.2 g
26.0 g
3.3 g
25.
Which term matches this definition? “Causes reddening or blistering of skin.”
Flue gas desulfurisation
Strong alkali
Irritant
Hydrochloric acid
26.
True or false? Corrosive substances destroy skin.
True
False
27.
True or false? Oven cleaner is a strong alkali.
True
False
28.
True or false? Alkalis feel rough.
True
False
29.
Which statement is correct?
It is safe to taste lab acids.
Acidity is a physical property.
Pure water is acidic.
Concentrated acids are corrosive.
30.
Which term matches this definition? “Substance that changes colour with pH.”
Indicator
Liming
Strong alkali
Catalytic converter
31.
True or false? In neutral solution litmus stays the same.
True
False
32.
A bottle holds 500 cm³ of vinegar that is 6% acid. Volume of acid?
30 cm³
3000 cm³
83 cm³
470 cm³
33.
Which statement is correct?
Corrosive substances are harmless.
Never taste chemicals in the lab.
Lemon juice is alkaline.
Alkalis feel rough.
34.
Household products by type. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
35.
Which is the correct definition of “Hazard symbol”?
Rain with pH below about 5.6 due to pollution.
Salt from hydrochloric acid and sodium hydroxide.
Gas that turns limewater milky.
Picture warning of danger.
36.
Lemon is 5.0 g acid per 100 g. Acid in 200 g of lemon?
40.0 g
10.0 g
205.0 g
1000.0 g
37.
Which statement is correct?
Alkalis feel rough.
Oven cleaner is an acid.
Acidity is a physical property.
Pure water is neutral.
38.
Which statement is NOT correct?
Fizzy drinks are slightly acidic.
Corrosive substances are harmless.
Vinegar contains acid.
Dilute acids may be irritants.
39.
Household products by type. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
40.
A bottle holds 1000 cm³ of vinegar that is 4% acid. Volume of acid?
40 cm³
250 cm³
960 cm³
4000 cm³
41.
Acids in foods (g per 100 g). What is the total of all the values?
Dr Dabour Hub Academy - figure 10
4.8
8.3
6.6
4.9
42.
Lemon is 5.0 g acid per 100 g. Acid in 50 g of lemon?
55.0 g
10.0 g
250.0 g
2.5 g
43.
Concentrated acids are ____.
sweet
corrosive
harmless
neutral
44.
What colour is litmus in acid?
Blue
Purple
Red
Green
45.
Lemon has 5.0 g acid and apple 0.5 g per 100 g. How many times more in lemon?
4 times
100 times
10 times
6 times
46.
Which term matches this definition? “pH exactly 7.”
End point
Neutral
Alkali
pH meter
47.
Which statement is NOT correct?
Alkalis feel soapy.
Vitamin C is ascorbic acid.
Soap is acidic.
Dilute acids may be irritants.
48.
Which statement is correct?
Vinegar is neutral.
Lemon juice is alkaline.
Oven cleaner is an acid.
Dilute acids may be irritants.
49.
True or false? Oven cleaner is an acid.
True
False
50.
Household products by type. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
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Part of Chapter 5: Acids and Alkalis — see every lesson and quiz in this unit.
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