Monday, 23 April 2012

Baking Soda Explosions

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While we've been on our science-y kick lately, I thought it would be fun to try an experiment I've seen lots around the blogosphere - Baking Soda Explosions...

(ps in the UK there are differences between baking powder and bicarbonate of soda - there is some bicarb in baking powder, so this will work, but on a smaller scale, if you can, use pure bicarb for a big effect!)

Since we've been doing colour mixing I thought we'd colour our vinegar with food dye - Vinnie chose red and yellow to see what colour we would create, I don't think he was expecting what happened though!

I've never done this before, so I had no idea what to expect - I used about 2tbsp bicarb in the bottom of each cup, then about a glass full of vinegar

They fizzed up really well, as you can see Vinnie was impressed!

And when we were done he remembered that our colours had mixed to create orange!

I'm putting together a post of 'Everyday Experiments' - fun investigations you can have with kitchen and household ingredients. What's your favourite way to explore?


  1. Saw your link at Learn with Play at Home and had to stop by! My kiddos love science too and I have posted a lot of experiments lately. Can't wait to poke around your blog!

  2. We love volcano explosions! Such simple fun!

  3. This is great- our daughter asked for a volcano for Easter- so the bunny brought her a mini-volcano- But, he could have just brought some baking soda and vinegar in a cup. haha! The little one is cool- you do the same thing- but the bunny spent more money than necessary. Plus, his volcano spewed boring white lava. haha!

  4. Bobo likes to make a bag explode using the baking soda and vinegar method. It is an outside project, though. We also blew up a balloon using the gases from baking soda and vinegar with a water bottle and balloon. This also should have been done outside as the balloon flew off and got pretty messy.

  5. Looks like you had fun! This is on our to-do list for Mr. A's april vacation this week. Can you believe in all his 7 years we've never tried this experiment??

  6. I love these colorful explosions! We haven't done them in a while, but it's time to do them again. Your son looks so pleased with his result! Thanks for sharing at the Kids Co-op Playdate :-)


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