Ketchup & Baking Soda Volcano Materials
- small container (I used an empty travel-size bottle.)
- volcano (You can mold it from clay or use a cardboard form.)
- baking soda
- liquid dishwashing soap (optional)
- water (optional)
Make the Volcano EruptThis is really easy! Swirl together a squirt of dishwashing detergent (if you want foamy orange lava), ketchup, and enough water to achieve the desired thickness. When you are ready to start the eruption, add baking soda. Alternatively, you could mix together the baking soda, detergent, and water. Add the ketchup when you're ready for the eruption.
The 'lava' erupts slowly and steadily, rather than forcefully, so this is a nice volcano to make if you want a longer-lasting eruption.