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Chromatography for Grades 1-5: Learning Paper Chromatography, Lecture notes of Art

Falmouth UniversityArt

An activity guide for teaching children about chromatography, a chemical process used to separate substances into their individual components. The activity includes making a chromatography 'flower' or 'test strip' using coffee filters, markers, water, and other materials. The children will learn about the different phases of chromatography, the role of solvents, and the separation of dyes. The activity is suitable for grades 1-5.

Typology: Lecture notes

2021/2022

Uploaded on 09/12/2022

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Activity Guide: Chromatography
Museum Connection: Diorama halls have excellent examples of art work.
Overview of activity: In this activity, we will learn about paper chromatography and along the way we’ll
also make a chromatography “flower”
Grade Level: Grades 1-5
Main Idea: Understand that chromatography is the chemistry of taking things apart through the
use of colors.
Background Info:
Chromatography is used to separate a substance into its individual components. There are
different phases with chromatography: Stationary (solid or liquid supported by a solid) and
Mobile (liquid or gas).
One of the most common ways
this chemical process is used is
through paper chromatography.
Most often, it is used to separate
out the mixtures of different
color dyes. For paper
chromatography, dyes are
marked out on a designated type
of paper and a solvent (coffee
filters and water in our case).
The solvent should be below the marks of dye. As the solvent travels up the paper, the different
components of the dye travel at different rates- the more dye it has the more it will typically.
This allows a chemist to determine what components came together to make a dye.
http://www.chemguide.co.uk/analysis/chromatography/paper.html
Food Paper Chromatography
Overview of activity: In this activity, we will learn about paper chromatography and along the way we’ll
also make a chromatography “flower”
Materials (read step-by-step instructions for exact materials needed)
Item
Quantity
Coffee Filter
1-2 per person
pf3
pf4
pf5

Partial preview of the text

Download Chromatography for Grades 1-5: Learning Paper Chromatography and more Lecture notes Art in PDF only on Docsity!

Activity Guide: Chromatography

Museum Connection: Diorama halls have excellent examples of art work. Overview of activity: In this activity, we will learn about paper chromatography and along the way we’ll also make a chromatography “flower” Grade Level: Grades 1- 5 Main Idea: Understand that chromatography is the chemistry of taking things apart through the use of colors. Background Info: Chromatography is used to separate a substance into its individual components. There are different phases with chromatography: Stationary (solid or liquid supported by a solid) and Mobile (liquid or gas). One of the most common ways this chemical process is used is through paper chromatography. Most often, it is used to separate out the mixtures of different color dyes. For paper chromatography, dyes are marked out on a designated type of paper and a solvent (coffee filters and water in our case). The solvent should be below the marks of dye. As the solvent travels up the paper, the different components of the dye travel at different rates- the more dye it has the more it will typically. This allows a chemist to determine what components came together to make a dye. http://www.chemguide.co.uk/analysis/chromatography/paper.html Food Paper Chromatography Overview of activity: In this activity, we will learn about paper chromatography and along the way we’ll also make a chromatography “flower” Materials (read step-by-step instructions for exact materials needed) Item Quantity Coffee Filter 1 - 2 per person

Markers (Vis a Vis, washable, permanent, etc) X Scissors X Clear Cups At least 1 per person/test strip Water X Tape X String X Clothespins 1 per paper strip Paper towel 1 per person Pipe cleaner 1 per person Ruler 1 per person Wooden skewer/toothpick 1 per test strip Prep (10- 15 minutes):  Gather the necessary materials for the experiment. You should also decide on a design for the paper, for example, making individual “flowers” or test strips. o Flowers are great for younger ages, test strips are great for older ages.  For Flowers, you may want to prep coffee filters by cutting a hole in the center and preparing the “paper towel wicks”.  For test strips, you may choose to cut your coffee filters ahead of time into strips.  Prepare cups and water or have them available when ready as well as prep the drying area. Step-by-Step Instructions: Flowers (15- 20 minutes, drying takes longer):

  1. Have a conversation around chromatography- what is it? Why do chemists use it? How are you going to use it today?
  2. Begin by giving each person a coffee filter to color on. Allow them to use a variety of markers to decorate their filter. Vis-a-Vis markers will work best and encourage them to draw small or simple designs in different colors--don’t just color the entire filter! (Remember, we want to be able to see the colors separate and observe what happens)
  3. Cut a hole in the center of the filter, about the size of a quarter. Folding the filter will aid in cutting the hole.
  4. Take a paper towel and roll it up to make a wick, or long stem that will reach into the cup of water and draw the water up to the filter.
  5. Make predictions around what you think will happen once you place the wick into the water.

Test Strips (15-20 minutes, drying takes longer):

  1. Have a conversation around chromatography- what is it? Why do chemists use it? How are we going to use it today?
  2. You may want to split people into groups, or they can work individually. Begin by giving each group 1 - 2 coffee filters. Cut the filters into strips, about an 1-1 ½ thick.
  3. Once all the filters are cut, select a number of colors to test (each group should get the same number of colors and cups). Draw a thick line of color about 2 - 3 inches up the coffee filter. a. Hint: Have each person test a black or brown, primary color, and a secondary color for great comparisons!
  4. Prep cups and filters: Place filter around a skewer and tape it, placing about an inch of water into clear cups.
  5. Make predictions about what you will see. a. What will happen to the wick? What will happen to the water? What will happen to the coffee filter? b. What do you expect to see when the water reaches their marker decorations?
  6. Carefully lower the bottom of the test strip into the water and place the wooden stick on top of the cup.
  7. Watch as the water begins to travel up the wick to the coffee filter and make observations about what is happening when the water reaches the marker drawn onto the filter. a. What is happening to the marker lines?

b. What is happening to the different colors they have on their test strips?

  1. Discuss what our observations can tell us about the colors we chose to use.
  2. Remove test strips from water (this will begin to stop the chromatography process) and then lay them flat to dry (you can also use paper towels under the strips to keep the marker dye from staining the table). Dry may take a couple hours.
  3. Once dry, tape test strips onto a journal/worksheet.