Chromatography of Pigments Write Up
Introduction:
- Explain paper chromatography
- Describe the Greek origins of the word chromatography
- Explain how paper chromatography is used
- Explain how chromatography separates liquids into their individual components
- Explain the purpose of the paper
- Explain what is used as the developer
- Explain how the separation process actually takes place
- Explain the movement of the different components up the paper
- Tell what a chromatogram is
- What is the Rf value and give the formula for obtaining this value
- How do scientists use Rf values
Hypothesis:
- Write a statement explaining the lab objective of using paper chromatography to separate pigments
Materials:
- In sentence form, write a statement listing the materials required for this lab.
Procedure:
- In paragraph form, write the procedures for completing this lab
Results:
- Include your chromatography strip.
- Complete Data Table 1
- Write out and answer the questions on the lab. Remember to write and underline the question, but do NOT underline the answer
Conclusion (Write in paragraph form):
- Restate your hypothesis
- Tell the distance traveled by the solvent and by each color
- Compare the Rf value for each color and explain any similarities and differences
- Explain why some colors moved further than others
- Explain any errors you might have made in lab that could have affected your results
