Separating Ink Pigments
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Objective
I can separate the different pigments in ink using chromatography.
Part 1 of 4
Warm-up video
The Science Girl · 3:22
We don't generate video — this one is by The Science Girl 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
Black ink is typically a mixture of different colored pigments, not a single color.
- 2
In paper chromatography, the paper strip acts as the stationary phase, while the solvent acts as the mobile phase.
- 3
Chromatography separates substances based on their different affinities for the stationary and moving phases, causing them to move at different speeds.
Part 3 of 4
Practice
11 questions
What is the main purpose of using paper chromatography in the experiment described in the video?
In the experiment, what serves as the stationary phase?
Part 4 of 4
Exit ticket
Quick comprehension check
“Describe the setup of the paper chromatography experiment performed in the video, including the stationary phase, mobile phase, and how the ink is applied to the paper. What causes the different pigments to separate?”
Sample answer included in the free materials
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