Discover color chromatography science and separate marker pigments with easy at-home materials. (Hint: It's like color mixing, but in reverse!) What you need: - Coffee filters - Washable markers - Water - Cups - Pipe cleaners How to make coffee filter flowers: 1. Using a washable marker, draw a circle on a coffee filter about 1-2 inches from the center. It doesn’t have to be perfect, just make sure it’s a thick circle and packed full of ink. 2. Fold your coffee filter into a cone. 3. Fill a cup with a little bit of water, and then add your coffee filter so the tip without the ink touches the water. 4. Wait a few minutes, and you’ll see the ink start to rise up. When you like how it looks, take it out to dry. 5. Fold it into a flower shape, twist the end, and use a pipe cleaner to secure it and create a stem. 6. Make as many as you want for a colorful bouquet! What’s going on? Most markers use mixtures of several different chemicals to create their colors. This means that when the ...