Chemistry of Fall Colors
In autumn, as the green color of leaves fades, other vibrant colors become the main attraction. What’s the chemistry that makes it happen?
- Find the Hidden Colors of Autumn Leaves
Analyze different colored leaves to see what they reveal with paper chromatography. - Home and Garden pH Indicators
Anthocyanins and other chemicals provide beauty lurking in leaves. They can also reveal pH. Check your fridge and yard for options! - Black Bean Indicator
Anthocyanins are in more places than you might think. Instead of just tree leaves, they might also be in your dinner. - Making Natural Dyes from Plants
Leaves, twigs, roots, and more can color your cloth. Head outside to collect, then dye it up. - Leaf Rubbing Activity: Art & Science Project
Bring in the younger crowd with these picture books and lots of ways to try a leaf rubbing. Can they match the colors they see on each leaf? - pH Paper with Cabbage
Get arty with anthocyanins. Make indicator paper, then paint on acids and bases to create your masterpiece.
- Watch Leaves Change Color in a Matter of Seconds
Slow? No! This time-lapse video gives you a sped up view of leaves changing color. - The Chemicals Behind the Colours of Autumn Leaves
Red, orange, yellow. Which compounds give us these lovely leaf hues? - Why Do Leaves Change Color in the Fall?
There’s a rainbow hiding inside. What are the factors that finally reveal the colors?
- Chemical of the Week: The Chemistry of Autumn Colors
Admire the photos of fall as you learn about the chemistry that makes it happen.
- Fall Colors Arriving
You don’t need to be close up to see autumn arrive. Check out this satellite view from space. - Leaf Peep for Science
Old photos from citizen scientists can hold the key for environmental researchers. - Science of Fall Colors
The Forest Service knows trees. Get the scoop on connections between trees, their leaf colors, weather, and more. - A Rainbow of Fall Leaves
This rainbow has different colors than you know, but just as beautiful.
(all sites accessed August 2021)
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