Will the mixture stain surfaces?

It's best to work on a surface that can be cleaned easily, as food coloring can stain some materials.

How long will the fizzing last?

The reaction happens quickly, usually lasting about 10-30 seconds depending on the amount of vinegar used.

Yes, different types of vinegar can work, but you may want to stick to white distilled vinegar for the best visual effect.

You can try using fruit juices or natural dyes if you prefer a non-artificial approach.

While the materials used are safe, adult supervision is advised to help control the pouring of vinegar.

Engage kids with this fun and educational rainbow fizzing science project using baking soda and vinegar.

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Place the cardboard tubes upright on a tray or flat surface to catch any overflow.
Spoon 2 tablespoons of baking soda into each cardboard tube.
Mix 1/2 cup of vinegar with a few drops of your chosen food coloring in small cups.
Pour the colored vinegar into the tubes using the funnel and watch the fizzing reaction!

Ensure children are supervised, especially during the pouring step. Clean up any spills immediately.