Lesson T3.2.2
T3.2.2 Distillation and chromatography Quiz: KS3 Chemistry, Unit 3
20 questions
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Lesson T3.2.2, Distillation and chromatography: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 3: Pure and impure substances, written with Revision Ninja.
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The 20 questions
-
Which process involves evaporating a liquid and then condensing its vapour?
- Filtration
- Distillation
- Chromatography
- Decanting
-
What is the name of the part of distillation apparatus where vapour is cooled back into a liquid?
- The filter funnel
- The condenser
- The crucible
- The burette
-
What process is used to obtain pure water from sea water?
- Distillation
- Chromatography
- Decantation
- Filtration
-
Which physical property does simple distillation rely on to separate liquids?
- Colour
- Boiling point
- Solubility
- Density
-
Why does distillation separate a solvent from a solution?
- Different boiling points
- Different densities
- Different particle sizes
- Different magnetic properties
-
What is the moving phase in paper chromatography?
- Stationary paper
- Ink spot
- Solvent
- Glass rod
-
What type of mixtures is paper chromatography primarily used to separate?
- Soluble dyes
- Pure elements
- Molten metals
- Insoluble solids
-
Why does a dye travel further up the chromatography paper?
- Lower solubility
- Heavier mass
- Higher solubility
- Darker colour
-
What does black ink separating into multiple spots in chromatography reveal?
- It is a mixture
- It is a pure element
- It is a single solvent
- It is a compound
-
Why is the baseline drawn in pencil for chromatography?
- Ink reacts with paper
- Pencil shows up clearly
- Pencil is insoluble
- Ink is too dark
-
Why must the baseline be kept above the solvent in chromatography?
- To prevent washing off
- To speed up separation
- To stop evaporation
- To save solvent
-
What is the purpose of the condenser in simple distillation?
- To cool the vapour
- To increase pressure
- To boil the liquid
- To filter impurities
-
Why does simple distillation require a heat source?
- To boil the liquid
- To filter mixtures
- To dissolve solutes
- To cool the vapour
-
What does it suggest if two spots rise to the same height in every solvent?
- They may be identical
- They are insoluble
- They are pure elements
- They are different compounds
-
What term describes the solid left behind in the flask after distillation?
- Filtrate
- Residue
- Distillate
- Solvent
-
Which liquid vaporises first during the distillation of a mixture?
- Greatest density
- Darkest colour
- Lower boiling point
- Higher boiling point
-
What does it suggest if a dye spot does not move from the start line?
- Pure substance
- Highly soluble
- Too much solvent
- Insoluble in solvent
-
Why is chromatography used in forensic science?
- To separate substances
- To burn samples
- To weigh solids
- To measure mass
-
How many spots does a pure substance produce in chromatography?
- A single spot
- Multiple spots
- Two spots
- No spots
-
What does filtration separate from a liquid?
- Gases
- Soluble liquids
- Dissolved solids
- Insoluble solids
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