short writing 23
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There are two videos to watch on YouTube:
1. Paper Chromatography (2:45) Mr. Pauller
separation of wet erase marker ink pigments
2. Paper Cromatography Experiment ( 6:38) Thomas TK
separation of plant pigments
Your assignment is to describe this technique in a short essay style report.
You should list the materials and equipment used in paper chromatography
and discuss the methods including things not to do which yields very poor
results. Diagrams may be used in your report.
Discuss each video: how many pigments appear to be present in the black marker
used in this video.
How many plant pigments were revealed by paper chromatography in video #2?
What is the rf?
When was chromatography invented? And by whom?
What is the mobile phase?
What is the stationary phase?
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