Lesson 4.8.2.3
4.8.2.3 Test for carbon dioxide Quiz: AQA Chemistry, Unit 8
20 questions
In partnership with Revision Ninja
Lesson 4.8.2.3, Test for carbon dioxide: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 8: Chemical analysis, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
What reagent is used to test for carbon dioxide?
- Bromine water
- Limewater
- Silver nitrate
- Damp litmus
-
What chemical is limewater?
- Calcium chloride
- Calcium carbonate
- Calcium hydroxide
- Calcium oxide
-
What does limewater turn when carbon dioxide is bubbled through it?
- Blue
- Colourless and clear
- Purple
- Milky (cloudy)
-
How is carbon dioxide mixed with limewater during its test?
- Cooled rapidly
- Heated strongly
- Filtered out
- Bubbled through
-
Which gas gives a milky result with limewater?
- Chlorine
- Carbon dioxide
- Oxygen
- Hydrogen
-
What insoluble solid forms when carbon dioxide turns limewater milky?
- Calcium chloride
- Calcium carbonate
- Calcium hydroxide
- Calcium oxide
-
What compound is limewater a solution of?
- Magnesium sulfate
- Calcium chloride
- Calcium hydroxide
- Sodium hydroxide
-
Which aqueous solution is used as the test reagent for carbon dioxide?
- Litmus solution
- Baryta water
- Limewater
- Bromine water
-
A gas bubbled through limewater makes it turn milky. What is the gas?
- Oxygen
- Hydrogen
- Carbon dioxide
- Chlorine
-
Limewater stays completely clear when a gas is bubbled through it. What is absent?
- Hydrogen
- Oxygen
- Carbon dioxide
- Nitrogen
-
Why must a gas sample be shaken with limewater during testing?
- To heat them
- To mix them
- To dry them
- To cool them
-
What visual observation confirms a positive test for carbon dioxide?
- Limewater turns milky
- Limewater turns green
- Limewater turns blue
- Limewater turns red
-
Which gas turns limewater milky?
- Carbon dioxide
- Oxygen
- Chlorine
- Hydrogen
-
What is the expected appearance of limewater after a positive test for carbon dioxide?
- Deep red
- Cloudy white
- Dark blue
- Bright green
-
Why might old limewater fail to turn milky with carbon dioxide?
- Too hot
- Too concentrated
- Too acidic
- Already reacted
-
What type of product causes limewater to become milky in the carbon dioxide test?
- Clear liquid
- Precipitate
- Gas bubble
- Soluble salt
-
Which equation shows limewater turning milky with carbon dioxide?
- Ca(OH)2 + CO2 -> CaCO3 + H2O
- Ca(OH)2 + O2 -> CaO2 + H2O
- Ca(OH)2 + CO2 -> CaO + H2
- CaCO3 + H2O -> Ca(OH)2 + CO2
-
What causes limewater to become unreliable if left unsealed?
- Exposure to light
- Boiling heat
- Freezing temperatures
- Exposure to air
-
What solid makes limewater turn milky in the carbon dioxide test?
- Calcium chloride
- Calcium oxide
- Sodium carbonate
- Calcium carbonate
-
How much carbon dioxide is needed to make limewater turn milky?
- High pressure
- A small amount
- Extreme heat
- A huge volume
Related quizzes
- Atoms, elements and compounds Quiz · 4.1.1.1 · 20 questions
- Using the Earth's resources and sustainable development Quiz · 4.10.1.1 · 20 questions
- Chemical bonds Quiz · 4.2.1.1 · 20 questions
- Conservation of mass and balanced chemical equations Quiz · 4.3.1.1 · 20 questions
- Metal oxides Quiz · 4.4.1.1 · 20 questions
- Energy transfer during exothermic and endothermic reactions Quiz · 4.5.1.1 · 20 questions
- Calculating rates of reactions Quiz · 4.6.1.1 · 20 questions
- Mixtures Quiz · 4.1.1.2 · 20 questions
- Potable water Quiz · 4.10.1.2 · 20 questions
- Ionic bonding Quiz · 4.2.1.2 · 20 questions