Chromatography experiment from my book, ‘Science is Lit’ 🌟 #science #chemistry #experiment

Summary

This video explains a fun and easy chromatography experiment using filter paper, colored pens, and water. The process begins by drawing a pencil line on the paper, followed by marking the line with colored ink dots. The paper is then placed in a glass with water, which only touches the tip of the filter paper. As the water moves through the paper, it separates the ink into different pigments, demonstrating how some inks are more soluble than others. The experiment helps visualize how substances like blue ink travel further while others, like orange, do not due to their solubility. The final step is measuring the distance each pigment travels.

Takeaways

• 😀 The chromatography experiment involves using filter paper and ink to separate different pigments.
• 😀 A pencil line is drawn on the filter paper to serve as a baseline for the ink.
• 😀 Colored pens are used to draw dots along the pencil line for the experiment.
• 😀 The dots are labeled to identify which ink corresponds to which dot.
• 😀 A straw or cocktail stick is used to hold the filter paper and immerse it in water.
• 😀 Water should only touch the tip of the filter paper, not the ink dots themselves.
• 😀 As the water diffuses into the paper, it causes the ink to separate into various pigments.
• 😀 Some pigments are more soluble in water, causing them to travel farther along the paper.
• 😀 Blue ink travels further on the paper because it is more soluble in water.
• 😀 Orange ink doesn't travel much because it is less soluble in water, highlighting the importance of using felt tip pens.
• 😀 The final step involves measuring how far each pigment has traveled to understand their solubility.

Q & A

What is the first step in the chromatography experiment?

The first step is to take a piece of filter paper and draw a pencil line on it.

Why do you need to draw dots on the pencil line?

The dots represent the different colored inks that will be used in the experiment to observe how they separate.

What should you use to place the filter paper into the glass?

You can use a straw or a cocktail stick to hold the filter paper and place it into the glass.

How should the filter paper be placed in the glass?

The filter paper should be placed so that only the tip of the paper touches the water, without the water covering the ink dots.

What happens to the ink when the water diffuses into the paper?

As the water moves through the filter paper, it causes the ink to separate into different pigments.

Why do some pigments travel farther than others on the filter paper?

Some pigments are more soluble in water than others, which causes them to travel farther along the paper.

Can all inks be used in this chromatography experiment?

No, not all inks are suitable. The ink needs to be soluble in water to separate effectively during the experiment.

Why is orange ink not able to travel far in the experiment?

Orange ink is not soluble in water, so it does not travel far when the water diffuses through the paper.

What is the recommended type of pen to use in this experiment?

It is recommended to use felt tip pens because their ink is more soluble in water, which helps with the separation of pigments.

What should you do after the chromatography process is complete?

After the separation, you should measure the distance that each pigment has traveled along the filter paper to observe the results.