Lesson 5.1.1.2
5.1.1.2 Mixtures Quiz: AQA Combined Science, Unit 8
20 questions
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Lesson 5.1.1.2, Mixtures: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 8: Atomic structure and the periodic table, written with Revision Ninja.
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The 20 questions
-
What makes up a mixture?
- uncombined substances
- chemically bonded atoms
- fixed ratio molecules
- single pure elements
-
In a mixture, what happens to the chemical properties of each substance?
- they merge
- they are unchanged
- they are destroyed
- they change
-
Which methods are used to separate mixtures?
- chemical reactions
- nuclear fission
- thermal bonding
- physical processes
-
What is never produced during physical separation processes?
- pure solvents
- condensed vapours
- separated filtrates
- new substances
-
Which process separates an insoluble solid from a liquid?
- crystallisation
- chromatography
- fractional distillation
- filtration
-
Which process is used to obtain a solid dissolved in a solution?
- crystallisation
- fractional distillation
- chromatography
- filtration
-
Which process separates liquids with different boiling points?
- crystallisation of salts
- filtration of solids
- chromatography of inks
- fractional distillation
-
Which technique separates dyes in ink using paper?
- crystallisation
- chromatography
- filtration
- simple distillation
-
A mixture of sand and water is to be separated. Which process is best?
- electrolysis
- fractional distillation
- filtration
- chromatography
-
Pure salt is needed from a salt solution. Which process is used?
- chromatography
- simple distillation
- crystallisation
- filtration
-
Pure water is needed from salt water. Which process is used?
- crystallisation of salt
- simple distillation
- filtration of solids
- chromatography of dyes
-
Which process is used to separate crude oil fractions?
- crystallisation
- simple distillation
- fractional distillation
- chromatography
-
Which equipment is used to separate mixtures safely?
- reactive metals
- heatproof glassware
- insulated plastic
- wooden crucibles
-
Which tool separates iron filings from sand?
- Bunsen burner
- filter paper
- a magnet
- Liebig condenser
-
Which technique cools and collects a boiling liquid vapour?
- simple distillation
- filtration
- crystallisation
- chromatography
-
What happens to salt when separating salt water by distillation?
- stays behind
- passes through
- turns to gas
- evaporates first
-
Why does filtration fail to separate dissolved salt from water?
- water evaporates too fast
- particles are too large
- particles pass through
- salt undergoes a reaction
-
How are mixtures separated compared to compounds?
- thermally
- atomically
- chemically
- physically
-
Which component evaporates first during liquid mixture distillation?
- lower boiling point
- larger mass
- higher boiling point
- greater density
-
What property causes different substances to separate during paper chromatography?
- Mass
- Solubility
- Melting point
- Density
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