Question

5 imagine that you used a magic marker to take notes in your biology class. one of your classmates accidentally spilled her water on your notes. as the water is absorbed across the paper in your notebook, the ink from your magic marker moves with it, leaving bands of different colors behind on the page. what does this say about the ink you used? what has occurred here? check all that apply. check all that apply the marker ink was water soluble. the paper was water soluble. this was an unintentional chromatography experiment. the ink was insoluble in water.

Explanation:

• The marker ink was water soluble: Since the ink moved with the water, it must dissolve in water (be water - soluble). If it were insoluble, it would not move with the water.
• This was an unintentional chromatography experiment: Chromatography is a technique used to separate mixtures. Here, the ink (a mixture of different - colored substances) was separated as the water (the mobile phase) moved across the paper (the stationary phase), which is the basic principle of chromatography.
• The paper was water soluble: Paper is made of cellulose, which is not water - soluble. If it were, the paper would dissolve in water, not just absorb it.
• The ink was insoluble in water: Contradicts the observation that the ink moved with the water. If it were insoluble, it would stay in place.

Answer:

• The marker ink was water soluble.
• This was an unintentional chromatography experiment.