@To separate large pieces of glass from water, what technique would be best?
Decanting
Dissolving, filtering and evaporation
Sublimation

@To separate the dyes ink is made from, it is easiest to use:
Chromotography
Filtration
Evaporation

@The best way to separate a mixture of sand and salt is:
Dissolving, filtering and evaporation
Adding a solvent and then using chromotography
Decanting

@Oxygen and nitrogen can be separated from the air by fractional distillation because:
Nitrogen has a different boiling point from oxygen
Oxygen is more reactive than nitrogen
Oxygen is more soluble than nitrogen

@What is an emulsion?
Two liquids mixed together that don't dissolve in each other
Two soluble liquids mixed together
A mixture of two liquids than can't be seen

@What method is used to separate ethanol from water?
Fractional distillation
Filtration and then evaporation
Sublimation

@What is the best way to separate iodine from other impurities?
Sublimation
Dissolving and filtering
Fractional distillation

@What is dissociation
Changing straight from a solid to a vapour
Producing ions
Having two distinct melting points

@To separate sulphur from sand the two substances are dissolved in methylbenzene, filtered and evaporated. Why use methylbenzene?
Because sulphur is soulble in it, sand is not
Because both substances are soluble in it
Because methylbenzene has a low boiling point

@Why are the components in crude oil separated by fractional distillation?
Because they have different boiling points
Because they are all liquid
Because they are hydrocarbons

@What are miscible liquids?
Liquids which will dissolve in each other
Liquids with low boiling points
Liquids which are insoluble in water

@To separate the dyes universal indicator is made of, it is easiest to use:
Chromotography
Evaporation
Filtration

@Pure water can be produced from salt water by distillation. To do this you would use a:
Condenser
Filter funnel
Burette

@The easiest way to separate ammonium chloride from a mixture is by
Sublimation
Fractional distillation
Dissolving, filtering and evaporation

@A solid goes straight to a vapour when heated. This is called:
Dissociation
Miscibility
Condensation

@A solid that will dissolve in a liquid is called a:
Solute
Solvent
Solution

@If a solid will dissolve in a liquid, the liquid is called a:
Solvent
Solute
Solution

@In a police investigation two samples of ink needed to be tested to see if they were the same. The method used to show this would be:
Chromatography
Centrifuging
Distillation

@The diagram shows the results of a chromotography experiment. Sample S contains which of the following?
#chrom
Substances X and Y
Substances W and Y
Substances Y and Z

@The diagram shows the reuslts of a chromotography experiment. The sample S does NOT contain:
#chrom
Samples W and Z
Samples X and Y
Samples W and Y

#The concentration of alcohol in whiskey is achieved by:
Distillation
Crystallisation
Evaporation
