Posted in Science Activity, Shapes & Colors, Valentine Day Activities

Fizzing Hearts – Science Activity

Fizzing Hearts is a classic science activity – a great way to introduce the concept of chemical reaction for preschoolers. Baking Soda is alkaline and reacts with acids such as vinegar, releasing carbon dioxide and water. The fizz produced is fun for kids to watch. This activity is perfect for Valentines day theme or just anyday 😀

What you need

  • Baking Soda
  • Food color
  • Vinegar
  • Heart shape silicone mold
  • Squeeze bottle

How to

  • Mix few drops of food color to baking soda.
  • Add few drops of water if needed. The mixture should be slightly wet yet crumbly.
  • Press them into the molds and Freeze for about 30 mins.
  • Take the hearts out of the molds, place them in bins or muffin pans. We used toy storage bin.
  • Fill the squeee bottle with vinegar and give them to your kids. Let them see, hear & enjoy the fizzing, squirting vinegar over the hearts.

Miss A(3yrs) & Miss D(2yrs) enjoyed this activity alot. We spoke about different colors, explained why the fizz was created and also noticed how the colors blended to form a green color solution(given the colors of hearts). Each time the heart fizzes my LOs would scream of joy, “look mummy bubbles”😀 We had so much fun, lots of laughs, squirting, hissing noises.. That was one fun evening!



Hi!! Im Lavanya, stay at home mom of 3 & 2 yr old girls.. My LOs are very active and they need various activities to keep them busy and interested. A monotonous play bores them easily.. Hence, I've started to explore & create activities to keep them occupied - fun & some learning.. This blog is my maiden attempt where you can find simple crafts and learning activities for kids. If you like my page share it with your friends. Also tell me what you think in the comments. 😀 Thanks for stopping by!!

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