Snow Volcano – Baking Soda Volcano

We gathered up the last remaining bits of snow this afternoon to make a Baking Soda Volcano.

I placed a small glass jar in the centre, with the top level with the top of the snow.

What you need

2 spoonfuls of baking soda (bicarbonate of soda )

1 spoonful washing up liquid

a few drops of red food colouring

30 ml vinegar


Add everything except the vinegar to the water bottle.

Stand back, get ready……add the vinegar and watch the eruption! If it doesn’t work so well, add a bit more washing up liquid and vinegar.

I loved how easy this was to make and how great the red looked against the snow!


Baking soda volcano


What do you think of our Baking Soda Volcano?

The Science bit

Vinegar (an acid ) and bicarbonate of soda ( an alkali ) react together to neutralise each other. This reaction releases carbon dioxide, a gas which is the bubbles you see, these bubbles make the washing up liquid bubble up to give the reaction shown above.

Related posts

More Baking Soda Experiments

Monster Tea Party

Baking Soda powered boat

Baking Soda Popper

Fizzing rocks with baking soda

Author: Emma Vanstone

Science Sparks, is a site dedicated to making Science fun for kids. I’d love you to follow me on my Google Profile+.

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  1. ooh I like it with the snow…I like it even more that it’s outside!

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  2. I would have never thought to do this outside with the snow… what a fun idea! I love it!!

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    • I was going to get out to do this with the last of the snow today, but it’s all muddy :-(

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  3. Now this is super fun and there isn’t the heart break of destroying a papier mache work of art ;)

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    • oh no, I hope you get some soon. x

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  4. Going to try this next Winters, I think my kids would love to do this.

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  5. Hooray for snow in March. We’re trying this out later. Children (aged 3 and 6) very excited‼

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