Ready for some more simple science fun with the kids?
I remember doing this one back in elementary school. All you need are some coffee filters, colored markers, water, and a little patience and you can explore chromatography! (Don’t worry, it’s just a big word which basically means you are going to separate the colors.)
Then we put just the edge of the filter into a shallow container of water, making sure the marker dots were above the water. (I had to use some clothes pins to hold the filters onto the edge of the container so they wouldn’t slide to deep into the water.)
Almost immediately you will see the colors start to spread as the filter soaks up water.
If you are patient enough the different colors will spread all the way to the edge of the filter. This is really pretty if you use several different colored dots!
Once the color was all the way to the edge, we took the filters out to dry. (If you don’t take them out of the water, the color will eventually disappear except for a thin line of color up at the top — like our green one in the picture above.)
And what do you do with all those colorful filters?
Craft with them, of course! Be sure to come back and see what we make with our coffee filters later this week! (Here is the link to the crafts we did with them.)
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