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April Fools’ Day Science Activities

March 31, 2015 2 min read

April Fools’ Day Science Activities {and a Giveaway!}

So, you know that I like to have fun and that I love to fool my sister, Tracey!

Every April Fools' Day I always have a virtual bag full of tricks to add some . . . umm . . . excitement to the day. Of course, Tracey doesn't always agree that it is exciting, but that is what twin brothers are for, right?

Being the generous guy I am, I would like to share a few of the science tricks I have lined up for tomorrow!

April Fools' Day Science Activities

Before I share the fun, I have to add a disclaimer that you (the parent) should be the one doing these activities. Plus, you need to have gloves and protective eye-wear anytime you handle dangerous chemicals like bleach or ammonia. On to the science fun!

Disappearing Color

Now you see it, now you don't - a classic April Fools' Day science activity. This is a super easy trick that is guaranteed to fool your peeps!

You will need the following:

  • Cranberry juice
  • Clear glass
  • Eyedropper
  • Bleach

Here is what you do:

  1. Pour about half a cup of cranberry juice into the clear glass.
  2. Then, use an eyedropper to add a bit of bleach to the juice.
  3. Keep adding until the juice turns completely yellow! (BTW - Do NOT drink the clear juice, it is no longer safe for your belly...or your throat...or your mouth.)
  4. Then, slowly pour a steady stream of cranberry juice into the glass and watch the color disappear!

April Fools’ Day science activity


The bleach oxidizes the color molecules in the juice, which is just a fancy way of saying that the bleach causes the color-making compounds to lose electrons, thus making the color disappear.

Crazy Green Liquid

Part color-change, part stink-up-the-kitchen - this April Fools' Day science activity requires a bit of preparation, but it is totally worth it!

You will need the following:

  • A head of red cabbage
  • Knife
  • Pot
  • Water
  • Strainer
  • Clear glass or plastic container
  • Ammonia

Here is what you do:

  1. Chop up a third of the red cabbage head. Place it in the pot and cover it with water. Bring the water to a boil and let it boil for 10 to 15 minutes - basically until the water is a deep purple color.
  2. Let cool the red cabbage juice before straining about a cup of the liquid into the clear glass or plastic container.
  3. In front of the peeps, you want to fool, add a tablespoon or so of ammonia. (You should see the liquid go from deep purple to bright neon green! If you don't, add more ammonia.)
  4. If you want to add a bit more, you can always add some white vinegar to change things back to purple and then pink, which is really fun too!

Crazy Green Liquid


Red cabbage juice acts as an indicator of pH, which is a fancy way of saying that it changes color - in the presence of an acid, it can turn pink and in the presence of a base, it can turn bright green. Ammonia is a base, vinegar is an acid.

Happy April Fool's Day!!

by Blaine Sassafras

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