BUBBLING CAULDRON by Anna Goolsby, Marketing Assistant

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Choose from a spectacular, fulldome show in state-of-the-art Sudekum Planetarium; hands-on, interactive exhibits; or one of our award-winning programs like daily Science Live! demonstrations, 3D printing workshops, summer camps and more!

  800 Fort Negley Blvd., Nashville, TN 37203

 Open daily from 9 a.m. - 5 p.m. and until 9 p.m. every second Saturday of the month.
Closed on September 9 - 10, Thanksgiving Day, Christmas Eve and Christmas Day

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DIY Science

Rainy day blues? Summertime slump? Cabin fever?

Don’t worry… we’ve got you covered!

Adventure Science Center is proud to offer DIY science lessons and experiments the whole family can enjoy! Each lesson provides instruction, a materials list, and ideas for activities to get hands-on with science, including sample questions to get those gears turning.

BUBBLING CAULDRON by Anna Goolsby, Marketing Assistant

Double, double toil and trouble... it's time to make a cauldron bubble! Explore chemistry with your little witch or wizard as you create your own spooky science experiment. 


  • Cauldron (or bowl)
  • Baking Tray
  • Baking Soda
  • White Vinegar
  • Dish Soap
  • Food Coloring (of your choice)
  • Glitter (optional)
  • Plastic Eyeballs (or any other creepy "ingredients")


Place your cauldron on your baking tray, making sure the tray has a little bit of a lip to catch any wayward witch's brew. Fill your cauldron about a third of the way with your white vinegar. Add a few drops of your food coloring then mix in a healthy squirt of dish soap. Now, it's time to get creative! Add glitter and other creepy "ingredients" to your brew to make it extra spooky. When you feel like it's just the way you want it, pour in a heaping tablespoon of your baking soda and watch your cauldron bubble before your eyes! 

The Science

This experiment explores two very important chemical reactions - an acid-base reaction and a decomposition reaction. The acid-base reaction happens when your white vinegar (acid) is combined with your baking soda (base). When baking soda (sodium bicarbonite) and the acetic acid in your vinegar are first combined, they create carbonic acid and sodium acetate. This is when the second reaction happens! The carbonic acid creates a decomposition reaction as it begins to break down into water and carbon dioxide gas - creating your boiling, bubbling brew!
Learn more»

Further Exploration

  • What happens when you use more vinegar? More baking soda? Which mixture works best and why do you think that is?
  • Join us for more spooky science fun at our Family Fun Labs on Oct. 27! 🎃
Posted by Anna Leigh Goolsby at 12:04 PM
800 Fort Negley Blvd. Nashville, TN 37203
Hours: 9 a.m. - 5 p.m.
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