Experiment with Primary Colors
- Cup or jar
- Cup of water
- Drinking straw
- Paper towels
- Colored markers
There are three primary colors, red, blue and yellow. Did you know that
all other colors are made by mixing different combinations of those three
colors? In this experiment we will unmix some colors to take them apart.
First you will need to cut some circles out the paper towels. Cut
them larger than the opening of the cup or jar so that they will
sit on top and cover the opening. Make one circle for each color
of marker you will use.
Next place a colored dot in the center of each circle. Touch the
tip of the marker to the paper and hold it still for a moment to
allow a little of the ink to soak into the paper. Be sure to choose
several colors, not just red, blue and yellow. Purple, green, black,
brown and orange are good choices.
Set the first circle of paper towel onto the cup or jar with the
colored dot in about the center of the opening.
- Dip the straw into the cup of water and put your finger over the
straw opening to hold the water in the straw. Now place the straw over
the ink dot and allow a few drops of water out, onto the ink dot.
The water mixed with the ink and caused it to separate into some of
its original colors. These were the colors that were mixed together to
get that color of ink in the marker.
The paper towel absorbed the different colors of ink at different speeds
causing different inks to spread out farther than others.