Lesson 5.4.2.4
5.4.2.4 The pH scale and neutralisation Quiz: AQA Combined Science, Unit 11
20 questions
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Lesson 5.4.2.4, The pH scale and neutralisation: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 11: Chemical changes, written with Revision Ninja.
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The 20 questions
-
What ions are produced by acids in aqueous solution?
- Hydrogen ions, H+
- Oxide ions, O2-
- Chloride ions only
- Hydroxide ions, OH-
-
What ions are present in aqueous solutions of alkalis?
- Hydrogen atoms only
- Hydrogen ions, H+
- Oxide ions, O2-
- Hydroxide ions, OH-
-
What is the pH of a neutral solution?
- 1
- 14
- 0
- 7
-
Aqueous solutions of acids have a pH that is:
- less than 7
- exactly 14
- greater than 7
- equal to 7
-
Aqueous solutions of alkalis have a pH that is:
- less than 7
- exactly 0
- equal to 0
- greater than 7
-
What is the range of the pH scale?
- 0 to 14
- 1 to 10
- -7 to +7
- 0 to 7
-
Which equation represents the neutralisation reaction between acid and alkali?
- H+ + OH- -> H2
- H+ + OH- -> H2O
- H+ + OH- -> H3O+
- H+ + OH- -> H2O2
-
Which indicator can be used to measure the approximate pH of a solution?
- Universal indicator
- Litmus paper alone
- Phenolphthalein only
- Methyl orange only
-
Which device measures pH more precisely than an indicator?
- A pH probe
- A burette
- A balance
- A thermometer
-
Which term describes a solution with a pH of 2?
- Insoluble
- Alkaline
- Neutral
- Acidic
-
Which pH value shows an alkaline solution?
- 7
- 0
- 12
- 3
-
Universal indicator shows which colour at pH 7?
- Orange
- Red
- Green
- Purple
-
What colour does universal indicator show in a strong acid?
- Red
- Blue
- Green
- Purple
-
What reacts together to produce water during neutralisation?
- Metal and acid
- Hydrogen and hydroxide
- Hydrogen and oxygen
- Acid and base
-
How does pH change when adding alkali to hydrochloric acid?
- Rises towards 7
- Stays at 1
- Falls towards 0
- Rises to 14
-
What property of a solution is measured by the pH scale?
- Temperature of solution
- Concentration of salt
- Density of liquid
- Acidity or alkalinity
-
Which solution has the lowest pH?
- A solution with pH 4
- A solution with pH 1
- A solution with pH 7
- A solution with pH 10
-
How does a solution of pH 3 compare to one of pH 5?
- Higher hydroxide ions
- Lower temperature
- Lower hydrogen ions
- Higher hydrogen ions
-
Which mixture results in an alkaline solution?
- Water and salt
- Excess hydrochloric acid
- Equal moles reacted
- Excess sodium hydroxide
-
Solution A has pH 3 and solution B has pH 5. How many times greater is the hydrogen ion concentration in A than in B?
- 100 times
- 2 times
- 1000 times
- 10 times
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