Chromatography

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/chromatography

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the historical pioneer?Mikhail Tsvet, early 1900s, developed early column chromatography for plant pigment separation
2. What is the applications?Essential in pharmaceuticals, environmental analysis, food science, forensics, and petrochemical industries
3. What is chromatography and how does it separate colors?Chromatography is a science trick that splits a mixture into its parts by letting some parts stick to a solid or liquid surface while others move with a liquid or gas. This creates separate colored bands that we can see.
4. Why did scientists start using chromatography?Scientists began using chromatography to separate plant pigments like chlorophyll and carotenoids, seeing different colored bands in a column.

Analyte: A substance or component whose presence or quantity in a sample is being determined.
Partition Coefficient: A ratio indicating how a compound distributes between two immiscible phases at equilibrium.
Retention Time: The time it takes for a specific component to travel through the chromatographic system.