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Valentines Day science experiment for kids

Looking to do something different this year for Valentines day with your kids? Here’s a fun and easy Valentines Day science experiment for kids!

I love celebrating Valentine’s Day with the kids! It’s just fun to do things hearts and red and pink for a few weeks leading up to the big day.

One thing that is always a hit with my kids is baking soda + vinegar crafts. You know, your basic science fair volcano!

This is that – on a super small scale. It’s fun to make these baking soda hearts fizz!

This occupied my kids for about 15 minutes, which, considering they are 2 and 4, I will take!

valentines day science experiment for kids

Valentines Day science experiment for kids

Supplies needed:

  • Baking soda
  • White vinegar
  • Water
  • Red or pink food coloring
  • Bowls
  • Spoon
  • Droppers
  • Heart mold

I did not have my kids wear goggles for this project, but best safety practices would be wearing eye protection!

supplies needed for valentines day science experiment

How to do this science experiment

STEP 1: Prep

Mix a few drops of red or pink food coloring into about 1/4 cup of water. Stir to combine.

Add 1/4 cup baking soda to a second bowl. Slowly add dyed water and stir with a spoon until you get a peanut butter consistency.

Spoon into heart molds.

making baking soda hearts

STEP 2: Freeze

Place the heart molds in the freezer overnight or until frozen solid.

Once frozen, you can pop out of the molds and into a plastic bag or container until you are ready to use them.

frozen baking soda hearts

STEP 3: Pour vinegar

Give each kid a small bowl of white vinegar, a plate, and a dropper.

toddler dropping vinegar on baking soda hearts

STEP 5: Fizz!

Let the kids dribble vinegar onto the hearts and watch them fizz!

Note that it helps to dump the plates off occasionally for a fresh, clean slate and the bubbliest effect.

toddler dropping vinegar on baking soda hearts

You can also drop the hearts straight into a couple of inches of vinegar in a glass for another bubbly effect!

toddler dropping vinegar on baking soda hearts

This was so much fun and a great way to talk about science leading up to Valentine’s Day!

toddler dropping vinegar on baking soda hearts

Are you doing any fun science games for Valentines Day?!

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