This classic baking soda and vinegar science experiment never gets old in our house—we just find new ways to put a new spin on an old favorite. Today we’re sharing this easy Fizzy Shapes Kids Science Experiment to show the reaction of a base and acid. We use some cookie cutters and plastic molds to form baking soda shapes, freeze them, and then watch the science happen as we mix baking soda and vinegar!
This fun and easy Fizzy Shapes Kids Science Experiment gets your little ones using their critical thinking skills, some of their 5 senses, while practicing coordination and fine motor skills. Let’s get started on what you need down below.
Fizzy Shapes Kids Science Experiment- What You Need:
- 2 cups baking soda
- 2 teaspoons clear gelatin
- 1/2 cup of water
- Parchment paper
- Food Coloring
Related: Float or Sink Game for Toddlers
- Mix together baking soda, gelatin, and water to form a paste.
- Line a plastic tray or cookie sheet with parchment paper and set it aside.
- Using a plastic cookie cutter or mold, scoop the paste into the mold.
- Release the baking soda from the mold onto a sheet of parchment paper. Continue with as many shapes until your mixture is gone.
- Place the tray in the freezer for a few hours or overnight.
- Fill cups with vinegar and 1-3 drops of food coloring.
- Using droppers, tell your kids to suck up the colored vinegar and then squeeze it over the baking soda shapes.
- Watch them fizz!
Related: Foaming Orange Volcano
They will see 2 different reactions when the vinegar and baking soda are mixed together. The first thing they’ll see and hear is a fizzing sound. The second thing they’ll see, if enough vinegar is added, is the baking soda disappearing into the vinegar. With the addition of the food coloring, there will be a lot of pretty colors that will eventually form 1 color.
The simplest explanation for this Fizzy Shapes Kids Science Experiment is, when and an acid (the vinegar) is mixed with a base (baking soda), they form a gas called carbon dioxide. To get the conversation flowing, ask your kids what they think is going to happen—what they’re going to see, smell, and hear. If they (and you) don’t mind the mess, incorporate their sense of touch and let them grab that baking soda and squish it between their fingers. Have fun!
*yields about 12-15 medium shapes
*Double recipe for more shapes
Have you tried this Fizzy Shapes Kids Science Experiment? What are some of your favorite kid’s science experiments? Share in the comments below and if you had fun with this experiment, please pin and share!
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Hi! I’m Meagan I just turned 40! I’ve been married for 14 years. I’m a proud boy mom, happily navigating my way through the little boy years. I met my husband over 20 years ago in high school; we got married 10 years later after graduating from the University of South Florida. I currently help run a family business with my parents while blogging about my life and love of DIY projects!
When I’m not at a kids sports game, I enjoy spending time with my family on a beach anywhere. I also love decorating and organizing, fun DIY projects, bargain shopping, and eating out or in! I also love Barbecue anything and a good show or movie on Netflix.