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10 questions
Which is the best way to get salt from salty water?
Evaporation
Filtration
Distillation
Pure water can be separated from inky water by simple distillation because:
Water and ink have different boiling points
Water evaporates leaving the ink particles behind
Ink evaporates leaving the water behind
What is the correct order for obtaining salt from a mixture of sand and salt?
Dissolving in water - filtration - evaporation
Evaporation - filtration - dissolving in water
Filtration - dissolving in water - evaporation
Which method is usually used to separate coloured substances from each other?
Simple distillation
Evaporation
Chromatography
How could you separate iron filings from a mixture of iron and sulfur?
Using a magnet
By adding water and filtering
By distillation
In filtration, what name is used to describe the solid left in the filter paper?
Filtrate
Residue
Distillate
If you wanted to make pure drinking water from sea water, what process would you use?
Filtration
Distillation
Evaporation
Crude oil can be separated into several liquids that have different boiling points. What is the name of this process?
Simple distillation
Chromatography
Fractional distillation
In chromatography, where are the spots of coloured substances placed?
Randomly on the piece of paper
In a vertical line on the paper
On a horizontal line on the paper
What is the name of the piece of paper at the end of a chromatography experiment?
Chromatogram
Filtrate
Residue
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