Today is Administrative Professionals Day! This is just one day out of an entire week designated to celebrate the men and women who support us each day, and keep everything running behind the scenes. What better way to show your gratitude than with a little science?
From school secretaries to afterschooladmins – this FUN, hands-on experiment is sure to bring a smile to those that make your job a little easier each day!
Ingredients & Supplies:
- Chromatography paper (Coffee Filters or Paper Towels cut into circles)
- Newspaper or table cloth
- Cup/container (wide enough that your paper can rest on top)
- Variety of water-soluble felt tip pens (black works best!)
- Pipe Cleaners
Cover work area with a vinyl table cloth or a nice thick layer of newspaper. Place your chromatography paper onto newspaper or tablecloth to keep the marker from bleeding through. Start off by making a nice sized dot in the center of your paper about the size of a penny.
Next, add water to your cup until the water line is about 1 or 1 ½ inches from the top of the cup. Cut a pipe cleaner that is about an inch longer than the height of the cup you are using. Push the end of the pipe cleaner through the center of the paper (through the black circle you drew) and place in your cup of water. The paper should be resting on top of the cup and not touching the water. Your pipe cleaner will act as a “ladder” for the water to climb and soak into the paper. You can see the water spreading across your paper which is called capillary action, and the separation of the ink.
Let your coffee filter dry on newspaper. When the filter is dry, fold it in half and then fold in half again. The filter will be shaped like a triangle. The top of the flower is where the edges are. Tape pipe cleaner to bottom of filter (where the point is) to make a stem. Separate the top of the flower into layers, making the flower look like a carnation or another kind of flower.
Repeat to create more flowers. Use different color combinations as well as making different “designs” on your paper.
The Science Behind It:
A technique known as chromatography is used by scientists to help separate and identify the components of various mixtures (solvents), such as those used in making commercial inks and dyes. You will discover that many of the inks (like many materials) are actually mixtures of two or more different substances. As water is soaked up through a center wick (pipe cleaner) and then gradually moves outward across a piece of filter paper (coffee filter or paper towel), the ink spot around the center “blooms” into a brilliant pattern of pigments. The movement of the water, which “climbs” or “crawls” across your paper, is called capillary action.
Capillary action is defined as the ability of a liquid to flow against gravity where liquid spontaneously rises in a narrow space such as a thin tube, or in porous material such as paper.
By no means limit yourself to the supplies and suggestions listed here because the most exciting (and beautiful) results are often a result of trying something new. Try different marker colors, marker brand, paper materials, and see if you get different results…scientists would call this experimenting!
Most importantly… Have FUN!