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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 5.4 Investigating neutralisation — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Cost of antacids per tablet (cents). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
2.
True or false? The best antacid neutralises the least acid.
True
False
3.
Acid neutralised by different antacid tablets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
4.
Cost of antacids per tablet (cents). What is the total of all the values?
Dr Dabour Hub Academy - figure 3
73
81
65
31
5.
Which statement is NOT correct?
The type of antacid is the independent variable.
Magnesium hydroxide + hydrochloric acid → magnesium chloride + water.
Carbon dioxide from antacids can cause belching.
A beaker gives precise volumes.
6.
Acid neutralised by different antacid tablets. About how many times bigger is D than C?
Dr Dabour Hub Academy - figure 4
3.7
2.4
4.9
1.2
7.
Acid neutralised by different antacid tablets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
8.
Which statement is correct?
The stomach makes sulfuric acid.
Swirling the flask mixes the solutions.
Antacids are acids.
Antacid type is the dependent variable.
9.
True or false? Carbonate antacids also make carbon dioxide, which can cause belching.
True
False
10.
Which statement is correct?
Magnesium hydroxide makes CO2 with acid.
The type of antacid is the independent variable.
The best antacid neutralises the least acid.
A beaker gives precise volumes.
11.
Cost of antacids per tablet (cents). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
12.
To compare antacids use the same volume of ____.
acid
indicator
tablet colour
water
13.
Tablet A neutralises 12 cm³ and B 25 cm³. Calculate the percentage more for B.
108%
208%
52%
13%
14.
Indicator shows when the acid is ____.
cooled
neutralised
diluted
heated
15.
Acid neutralised by different antacid tablets. What is the total of all the values?
Dr Dabour Hub Academy - figure 7
70
22
63
56
16.
Titration results for antacid B. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
17.
Which statement is correct?
Antacids are bases.
Whole tablets react faster than crushed ones.
A beaker gives precise volumes.
The stomach makes sulfuric acid.
18.
True or false? The stomach makes hydrochloric acid.
True
False
19.
Tablet D neutralises 30 cm³ and costs 20 cents. Cost per cm³?
1.50 cents
0.67 cents
600.00 cents
−10.00 cents
20.
Tablet C raised the pH from 1.5 to 6.8. What was the change in pH?
1.5
6.8
8.3
5.3
21.
Tablet A neutralises 18 cm³ and B 25 cm³. Calculate the percentage more for B.
139%
39%
7%
28%
22.
Titration results for antacid B. What is the value for 2?
Dr Dabour Hub Academy - figure 9
25.4
25.1
24.9
25.0
23.
pH of stomach after an antacid. What is the value of "pH" when "Time (min)" is 5?
Dr Dabour Hub Academy - figure 10
2.5
3.5
1.5
4.0
24.
The volume of acid neutralised is a ____ variable.
independent
dependent
fixed
control
25.
True or false? The type of antacid is the independent variable.
True
False
26.
Which is the correct definition of “Antacid”?
Soluble base with pH above 7 containing hydroxide ions.
Weak acid formed when CO2 dissolves in rain.
Medicine that neutralises excess stomach acid.
Adding one solution to another to find the exact neutral point.
27.
Calcium carbonate + acid → calcium chloride + water + ____.
oxygen
carbon dioxide
hydrogen
nitrogen
28.
Which statement is correct?
Magnesium hydroxide makes CO2 with acid.
A beaker gives precise volumes.
Whole tablets react faster than crushed ones.
A burette gives precise volumes.
29.
pH of stomach after an antacid. Calculate the percentage change in "pH" from 0 to 20.
Dr Dabour Hub Academy - figure 11
267%
−167%
62%
167%
30.
True or false? Antacids raise the pH towards 7.
True
False
31.
True or false? Carbon dioxide from antacids can cause belching.
True
False
32.
True or false? Antacids are acids.
True
False
33.
Which statement is NOT correct?
Antacid type is the dependent variable.
Indicator shows when the acid is neutralised.
Crushing a tablet makes it react faster.
To compare antacids use the same volume of acid.
34.
Magnesium hydroxide + hydrochloric acid → magnesium ____ + water.
oxide
chloride
sulfate
nitrate
35.
Cost of antacids per tablet (cents). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 12
A
B
C
D
36.
Which is the correct definition of “Fair test”?
Changing only one variable.
Graduated tube for adding precise volumes.
Carbonate used in antacids.
Pain caused by too much stomach acid.
37.
Acid neutralised by different antacid tablets. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
38.
Which term matches this definition? “The variable changed in the antacid investigation (type of tablet).”
Independent variable
Control variable
Dependent variable
Hazard
39.
Acid neutralised by different antacid tablets. What is the value for A?
Dr Dabour Hub Academy - figure 14
19
22
13
9
40.
Antacids ____ extra acid.
increase
cool
neutralise
ignore
41.
Too much acid causes ____.
indigestion
cold
cough
fever
42.
Which term matches this definition? “Base used in antacids.”
Magnesium hydroxide
Litmus
Limewater
Sodium chloride
43.
pH of stomach acid after adding four antacid tablets. Which bar chart is correct?
Dr Dabour Hub Academy - figure 15
A
B
C
D
44.
True or false? Magnesium hydroxide makes CO2 with acid.
True
False
45.
Which term matches this definition? “When indicator just changes colour.”
End point
pH meter
Weak acid
Sulfur dioxide
46.
pH of stomach after an antacid. At what value of "Time (min)" is "pH" greatest?
Dr Dabour Hub Academy - figure 16
20
10
5
15
47.
Carbonate antacids also make ____.
nitrogen
carbon dioxide
hydrogen
oxygen
48.
True or false? Whole tablets react faster than crushed ones.
True
False
49.
Which is a control variable in the antacid test?
pH change
Volume and concentration of acid
Brand name
Type of tablet
50.
Repeat titrations until results are ____.
random
different
concordant
zero
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Part of Chapter 5: Acids and Alkalis — see every lesson and quiz in this unit.
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