Flashcards
chemistry
Flashcards do conjunto (5)
- 1what is Paper chromatography.Paper chromatography is used to separate mixtures of soluble substances and to provide information on the possible identity of the substances present in the mixture. These are often coloured substances such as food colouring's,
- 2—Step 1.
Spots of ink or plat dye are placed on a pencil line - 3—Step 2
As the paper is lowered into the solvent, some of the dye spreads up the paper.
- 4—Step 3
The paper has absorbed the solvent, and the dye has spread further up the paper
- 5Chromatography relies on two different 'phases':< the mobile phase is the solvent that moves through the paper, carrying different substances with it
< the stationary phase is contained on the paper and does not move through it
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- GCSE Chemistry FlashCards sobre chemistry, criado por Travis Payne em 18-01-2019.
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- Travis Payne
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