1. It is important because if the filter paper gets in
direct contact with the water, then the ink will not have time to partition at
its own pace. Also the final result would not be the best looking chromatogram.
2. Some of the variables that may have affected the pattern
of colors may have been the marker, since each marker had a unique amount of
color, especially MrSketch markers. These markers provided a variety of colors
within them. Another factor may have been the amount of water and angle. The water
helps reveal how much of the ink reveals while the angle dictates the direction
and speed the absorbtion may have taken due to its position in the cup.
3. Black ink is made up of many different colors. For
example, red, yellow, or blue can make black, but there are many other colors
that can combine to form the color black. As a result, many marker and pen companies make their black writing
tools with their own combinations of black.
4. Blue is one color present in more than one type of ink. I
would assume so, but I believe there would be different compounds that produce
similar tones and color shades.
5. If the markers were permanent or “water-proof”, then the
pens would not absorb the water and let the pigments show their colors.
Solutions in which oil or other water resistant materials are soluble could be
used to separate the permanent ink.
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