1. Separating Colours
a)black ink is not black colour mixed with water
- it is a mix of colour
b)Chromatography
- use filter paper and water to separate colours
2. Examples of chromatography
a)if cut section of a paper, it can act as a wick
- If dip wick into the water, liquid is drawn up through the ink and colour begins to separate its own.
- The resulting pattern of colour is a chromatograph
b)Second method is called ascending paper chromatography
- The water soaks up from the base, carrying colour spots with it.
- Some colours move faster than others
-you can use chromatography for colourless mixtures.
- At the end, you must develop the chromatogram by adding another material that makes the spot visible.
a)black ink is not black colour mixed with water
- it is a mix of colour
b)Chromatography
- use filter paper and water to separate colours
2. Examples of chromatography
a)if cut section of a paper, it can act as a wick
- If dip wick into the water, liquid is drawn up through the ink and colour begins to separate its own.
- The resulting pattern of colour is a chromatograph
b)Second method is called ascending paper chromatography
- The water soaks up from the base, carrying colour spots with it.
- Some colours move faster than others
-you can use chromatography for colourless mixtures.
- At the end, you must develop the chromatogram by adding another material that makes the spot visible.