This will allow you to add the baking soda to the vinegar without having it explode immediately. Put baking soda in a time-release container. Any kind will work, but white vinegar will make the least mess. We dyed the baking soda each color in the rainbow and set the colors side by side in a baking pan. Fill the bottle about 1/4 to 1/3 of the way with vinegar. Make sure to keep the baking soda on one end and the vinegar on the other. Then, keeping the bottle flat and the straw side up (so nothing spills out), drop a few spoonfuls of baking soda into the bottle. There will be little clumps of baking soda from the moisture, but the baking soda shouldn’t be wet. Turn the bottle sideways, and cover the straw end with your fingertip while you pour about 1 cup of vinegar into the bottle. Note: I added a drop of food coloring to the water to help brighten the color of the baking soda! Pour a small amount of water into the bowl (like a teaspoon or two).Add 2-3 drops (or more if you’d like) of food coloring.Scoop 4 BIG spoonfuls of baking soda into a bowl.Here’s exactly how we dyed the baking soda: The only “hard” part about this baking soda and vinegar experiment is mixing the colors. And, we were inspired to make a rainbow! Supplies for Baking Soda and Vinegar Experiment We first came across dying baking soda on this post over at Where Imagination Grows. Have you ever met a preschooler? They don’t sit still long! You can imagine why I saved this for when we were stuck inside!! My kids would sit and experiment with the trays for over an hour. You can make up your own baking powder raising agent - for one teaspoon: mix 1/2 teaspoon cream of tartar with 1/4 teaspoon baking soda, made up to one teaspoon. When I was a preschooler teacher, I saved any baking soda and vinegar experiment for rainy days. It’s such a fun way to bring science to life! We’ve played with baking soda “dough” to make fizzy cupcakes and we’ve explored art and science with ice on the light table, but this was the first time that we tried dying baking soda to make a fizzy rainbow. Lemon juice can affect the flavor of your baked goods if you use too much. Keep the wet ingredients, like eggs or milk, in another mixing bowl separate from the dry ingredients. 2 Pour 14 tsp (1.2 mL) of lemon juice into the wet ingredients. We love to experiment with baking soda and vinegar! Whisk the baking soda thoroughly with the rest of the dry ingredients in a mixing bowl.
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