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Which of the following are methods of separating mixtures?
In paper chromatography, what is the name of the line where the solvent stops moving up the paper?
Which of the following are used in filtration?
What are two ways in which mixtures can be made?
In paper chromatography, why is the line drawn with a pencil instead of pen?
How do you know if a substance is pure, after using paper chromatography?
What does insoluble mean?
Which method is used to get pure water from seawater?
Which method is used to separate coloured substances from each other?