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Valentine’s Day Science Experiments & Activities | Inspiration Laboratories

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Here are all of our Valentine’s Day science experiments and activities from Inspiration Laboratories. I’ve also included some bonus Valentine’s Day activities at the end. Enjoy!

Valentine’s Day Science Experiments & Activities

Experiments with Valentine Candy Hearts

Everyone buys the candy conversation hearts because they’re iconic, but I don’t know many people that actually like to eat them. They are great for experiments though.

Dissolving Hearts Experiment {with printable data sheet} – This simple comparison experiment tests how fast the candy hearts dissolve in different temperatures of water.

Dissolving Candy Hearts Experiment 2 – Design an experiment test to see which candy heart will dissolve the fastest. We compared amounts vinegar and water for this one.

Candy Heart Reactions – This candy science investigation tests to see if candy hearts react with baking soda or vinegar.

Candy Heart Ingredient Experiment – This experiment is a continuation of the candy heart reactions investigation. Test which ingredient in candy hearts reacts with baking soda.

Dancing Hearts – This is more of a demonstration than an experiment. Use baking soda and vinegar to make the candy hearts appear to dance.

Raining Hearts Viscosity Experiment – This easy science exploration gets kids making predictions and thinking about the difference between liquids. Will the hearts rain down at the same speed in 3 different liquids?

Valentine Potion and Tasting Experiment – Make fizzy Valentine potions with fruit juice and create your own special fruit drink.

Other Valentine Science Ideas

2 Ingredient Glitter Slime for Valentine’s Day – Combine glue and liquid starch to create a super stretchy slime. You can talk about the science behind how the slime is made or you can test just how strong the slime is.

Fizzy Valentine Play Dough – This dough contains baking soda so it fizzes when you add vinegar. The dough also has soap so the reaction also makes lots of foam.

Frozen Vinegar Hearts – One of our most popular posts ever. This idea also combines two ingredients kids love: baking soda and vinegar. Add some hearts and you have a perfect Valentine’s Day science activity.

Valentine Heart Glyph – Practice following directions and make a secret piece of art. If you know the code, you can figure out who the owner of the heart is.

Color Changing Heart Bookmarks – Use heat sensitive paper to make an extra special bookmark for Valentine’s Day.

Solar System Valentines – Print these out and send them to school for Valentine’s Day!

Secret Messages with Baking Soda – Use chemistry to make secret messages with baking soda.

Colorful Science Investigation: Salt + Ice Hearts – Combine science with art in this colorful investigation with salt, ice, and paint.

Secret Code Message Cards – I shared this idea over at Red Ted Art. Use a little science to make art for the cards. Then, add secret code messages inside. The secret code messages are a great way to practice letter recognition, letter writing, and reading.

Valentine Heart Bubble Painting – Another idea I shared on Red Ted Art. Explore the baking soda and vinegar reaction and color mixing while creating a fun craft. After bubble painting, use the Valentine hearts in a card or hang them up as a decoration.

More Valentine’s Day Activities for Kids

I could make a case for how each of the activities below also works on science concepts, but that wasn’t my intent when we conducted the activity. Nonetheless, these activities are great for Valentine’s Day and perfect for sneaking in some learning to the fun.

Don’t miss any of our upcoming Valentine’s Day ideas! Subscribe to the Inspiration Laboratories newsletter.

Post originally published on January 16, 2014. Updated each year to include new ideas.

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