Use a Funnel: If you're using a narrow-necked bottle for the volcano, a funnel can make adding the baking soda and vinegar much easier and less messy. Hands-on science with preschoolers does ...

Let's break that down, shall we? Baking soda is simply the common name for sodium bicarbonate -- NaHCO₃ for all the science ...

It doesn't have an expiration date. To test your baking soda add a bit of vinegar. If it bubbles, it's still usable. More from Science Many people think baking powder and baking soda are ...