Exploding Valentines

One of the boys' favorite activities is playing with baking soda and vinegar. A couple weeks back I surprised them with some heart shaped baking soda and they enjoyed it so much we decided make some more for their valentines. 

Supplies - heart shaped silicone mold, 1 cup baking soda, 1/4 cup water

Step 1 - pour 1 cup baking soda into a bowl

Step 2 - Slowly add water, mixing as you go.  Big Buddy used an eye dropper for this but it isn't necessary. 

Step 3 - Add and mix in food coloring. 

Step 4 - Press baking soda mixture into the silicone mold. 

Step 5 - Let baking soda dry over night. If you are in a hurry you can also put the trays in an oven, set to warm, for 30-60 minutes. 

Step 6 - Gently press baking soda hearts out of the tray. 

Now you are ready to package and hand out your valentines. We included a little eye dropper in our valentines, you can get a set of 100 for under $5 from Amazon. The silicone heart mold can also be found on Amazon. If you don't have one you could also roll the wet baking soda in to balls. I, however, love my silicone trays and have discovered lots of uses for them. Some of my favorite ways to use them are scooping/sorting learning activities, creating plaster or paris mantipulative letters or numbers, and making fun shaped crayons. 

We packaged our hearts and eyedropper into a snack bags and then stapled a card with a cute message on the front and directions for how to make the hearts explode on the back. 

We plan to handing these out over the weekend and the kids are really excited to share one of their favorite activities with some of their favorite friends. 


  1. This is such a great idea, Rachel! Adam could spend an hour playing with baking soda and vinegar...the hearts would make it that much more fun!

  2. This is super cute and simple to help kids do! It has major boy appeal! Thanks for sharing! I've pinned:)


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