St. Patrick's Day Science Projects

Fun Science Projects for St. Patrick's Day

Add a wee bit of science to your St. Patrick's Day pranks and celebration with these fun chemistry projects.
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Dye Beer Green

Green beer is a St. Patrick's Day tradition.
Green beer is a St. Patrick's Day tradition. Alex Hayden, Getty Images

Use food coloring, not some weird chemical reaction. If you drink enough green beer, it could cause your urine to turn green. I imagine you might see even see leprechauns, though that would be from the alcohol, not the coloring.

Turn your fire green for a St. Patrick's Day science project.
Turn your fire green for a St. Patrick's Day science project. stay hungry for more, Getty Images
Wasn't there green fire in Disney's 1959 movie "Darby O'Gill and the Little People"? If not, there should have been. Eldritch green fire screams Irish and St. Patrick's Day. More »
You can use chemistry to change the color of copper pennies to silver and gold.
You can use chemistry to change the color of copper pennies to silver and gold. Vstock LLC, Getty Images
Use chemistry to make your very own pot of gold by changing the color of pennies from copper to silver and finally to gold! Some say leprechaun gold vanishes before you can spend it. You can't spend this gold either, but that doesn't make the project any less fun. More »
You can use a pH indicator made from cabbage juice to turn egg whites the color green.
You can use a pH indicator made from cabbage juice to turn egg whites the color green. Steve Cicero, Getty Images
Eat fried green eggs for breakfast. They look a little strange, but most people would prefer it to cabbage and corned beef. Actually, this project uses cabbage juice to turn the eggs green, so it's highly appropriate. More »
Normal urine is straw-colored or amber, but you can turn it green safely.
Normal urine is straw-colored or amber, but you can turn it green safely. Peter Dazeley, Getty Images

... or play a prank on someone else. If you drink enough green beer (or anything containing green food coloring) this can be one of the consequences. However, green food coloring is not the only way to color urine green. More »

Green hair may not be desirable all the time, but it's the perfect color for St. Pats.
Green hair may not be desirable all the time, but it's the perfect color for St. Pats. Thierry Dosogne
The non-permanent way to achieve this is to use cosmetic hair spray. You can use chemistry to impart a lasting shade of green. More »
Make green slime to attract and catch a leprechaun for St. Patrick's Day.
Make green slime to attract and catch a leprechaun for St. Patrick's Day. Oleksiy Maksymenko, Getty Images
Make green slime and set it someplace tricky to try to catch a leprechaun! It's like a humane glue trap, right? Personally, I'll be highly surprised if you manage to catch a leprechaun using green slime, but it's worth a try. More »
Make a real flower, such as this carnation, glow green!
Make a real flower, such as this carnation, glow green! This is a fun project for St. Patrick's Day or any time you need a glowing colored flower. Anne and Todd Helmenstine
If you put green food coloring in a white flower's water, you can get a pretty green flower. It's also possible to apply a little chemistry know-how to make a glowing green flower for St. Pats. More »