Separate Ink Pigments with Chromatography
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Objective
I can separate the different pigments in ink using chromatography.
Part 1 of 4
Warm-up video
amritacreate · 3:48
We don't generate video — this one is by amritacreate on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
In paper chromatography, a mixture of substances is applied to a filter paper called the stationary phase, while a pure solvent moves over it, called the mobile phase.
- 2
The RF value is calculated using the formula: RF = distance traveled by the component from the original line divided by distance traveled by the solvent from the original line.
- 3
To prepare the chromatography paper, a line should be drawn with a pencil 2 cm from the end, and the ink spot should be allowed to dry completely between applications.
Part 3 of 4
Practice
3 questions
What is the name of the technique used to separate the different colors in ink?
In the experiment, what two liquids are mixed together to make the solvent?
Part 4 of 4
Exit ticket
Quick comprehension check
“What two colors of ink were separated in the chromatography experiment?”
Sample answer included in the free materials
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