Analysis and Conclusions/ Post Lab

Analysis and Conclusions:

1.) What appeared on the filter paper? In the Alcohol test strip the ink smeared. Then in the H2O test the ink stayed the same.

2.) What did the results indicate about the black ink? What classification of matter could you give the ink?

The results indicate that the black ink has mixtures of colors also. The classification of matter i would give the ink would be a heterogeneous mixture.

3.) Is chromatography a useful separation method for ink mixtures? Explain based on your results. Yes chromatography is a useful separation method for ink mixtures. For example when the alcohol raised on the test strip the ink also raised and separated the mixtures of colors in it.

4.) If you could alter the experiment to test another condition or factor, what would you change or test?

I would probably want to test a different color marker like brown with vinegar or bleach.

Post Lab:

1.) How does paper chromatography work? What do the results tell us? Preferential adsorption of chemical compounds (gases or liquids) in an ascending molecular-weight sequence.

Data Table

Observations	Observation at 3 minutes	Observation at 6 minutes	Dry test strips
(Sharpie) black marker with alcohol	The ink is rising with the water on the strip.	The ink spreads and separates colors.	In the picture below.
Black marker with other solution	No other solution	No other solution	No other solution
Black marker with H2O	Nothing changed	Nothing changed	In the picture below

The Cup with alcohol after 3minutes. 

You can see the strip is wet halfway.

The Cup with alcohol after 6 minutes. 

You can see the black dot is changing color.

The Cup on the left is the one with H2O and 

the one on the right is the alcohol.

The whole structure of the project.

The 2 test strips after they are dried.

Materials/Procedure

Materials:

• Goggles

• Black Markers

• Strips of Filter Papers

• Metric Ruler

• Plastic Cup

• Rubbing Alcohol
• Tape

• Pencil

Procedure:

1.Using the ruler, cut the filter paper into long, rectangular strips, about 3 cm x 10cm. (You need 2)

2.Measure 0.5 cm from the bottom of the paper strip and draw a horizontal line with your pencil across the width of the strip. Then, use the black marker to make a dot on the pencil line.

3.Tape the paper strip around the pencil so that the very bottom of the strip touches the alcohol.

Hypothesis/Questions

1.) Are colors mixed to make other colors? Yes colors are mixed to make other colors.

2.) Can mixed colors separate into their components colors? I think mixed colors can separate into their component colors.

3.) Can black separate into its component colors? Yes black probably can separate.

4.) Which colors will separate out? Black would separate out in navy blue and brown.

Pre - Lab

*Lab Objective: Create a process for separating a mixture, specifically an ink mixture.

1.) What colors are mixtures? Orange(Red&Yellow), Purple(Red&Blue), and Pink(Red&Water).

2.) What substances could be used to separate a mixture? Water, alcohol, bleach, ammonia, and vinegar.

3.) What is Paper Chromatography? Chromatography is a method for analyzing complex mixtures (such as ink) by separating them into the chemicals from which they are made.