Toddler Activity: Candy Heart Science Experiment

Valentine’s Day projects don’t always have to be sweet. This spin on a classic science project is just as fun and festive for toddlers.

Most people will have the basic supplies for this already at home too!

Here’s what we used:

  • Conversation heart candies
  • Rubber heart tray
  • Baking soda
  • Vinegar
  • Cup
  • Eye dropper

Before we started, we did a little stacking game to see who could stack the hearts the highest. We also did a color match game too.

These little conversation hearts have so many different and educational uses.

Back to the experiment though.

I had Mila place all the candy hearts into the mini heart molds. Once they were all placed, the fun really happened.

Since it was her experiment, I had her place as much baking soda on the hearts as she wanted.

Then, with an eye dropped, she added vinegar.

Although adults know this reaction and I’ve done this a few times with Mila, she’s always amazing.

She kept saying how cool it was to make bubbles and was perplexed when the bubbles changed colors. It always makes me laugh when we do this too because she ends up pouring everything out.

There’s always a big reaction.

Even after being told that the candies were covered in vinegar, mila wanted to eat them.

Thankfully, she didn’t get any!

This Valentine’s Day science experiment was a fun one for us. It’s simple enough to let them do supervised, but complicated enough to help them learn more through it.

We’ll definitely keep doing this experiment, but this is great you have a science minded kid. It’s fun for them see the hearts and come up with their reasons as to why the hearts have disappeared or gotten smaller.

If you give this experiment a try, let me know in the comments.

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