This science experiment is a lot of fun! You can do it with toddlers as young as one-year-old that no longer put things in his/her mouth.
To do this science experiment you will need baking soda, water, and vinegar. The chemical reaction that these ingredients have when mixed together creates awesome mini-volcano eruptions.
Freezing the paste is optional, but I like it to make different shapes if you do.
Hear the fizz here in this short Youtube clip
Follow the recipe below to create these fizzy cubes! My son had a lot of fun dropping the baking soda cubes inside cups of water mixed with vinegar and seeing the bubbles show up
Step 1: create the fizzy cubes
To create the fizzy cubes mix baking soda with a bit of water to create a paste.
As an optional add-on, you can add a few drops of food coloring to create the colored fizzy cubes.
Add the paste into your silicone mold of choice.
Step 3: Freeze and unmold
Place the silicone molds in the freezer overnight.
Once frozen, remove the paste from the mold and place in a tray. It should now have the form of the silicone mold.
On a small pitcher or cup, mix equal parts vinegar and water.
Pour the vinegar mixture over the fizzy cubes and see the chemical reaction happen.
Step 3: observe and learn
The chemical reaction will dissolve the fizzy cubes.
Let the kids practice with different tools
such as spoons, droppers and syringe.
Fizzy Cubes Baking Soda Experiment
Fizzy Cubes Recipe
Ingredients
- • A small bottle of water.
- • Baking Soda or Sodium Bicarbonate.
- • Ice cube tray.
- • Food Coloring.
- • Stirrers.
- • Vinegar (clear).
- • Pipette (optional).
Instructions
- • Add about 1 tablespoon of Baking soda into 1/2 cup of water and stir well.
- • Pour the baking soda water into the ice cube trays (It doesn’t matter if some baking soda has not dissolved).
- • Make sure they do not overfill; otherwise, the colours might flow into other cubes.
- • Add coloring to the cubes and use a cocktail stick to stir gently in the cubes.
- • Place in the freezer to freeze (you can leave it overnight to get a good result).
- • Once frozen, remove the ice cubes and place on a tray or plate.
- • To melt the ice cubes and see the fizzy reaction, squirt clear vinegar onto the cubes for rainbow fizzing melting ice (you can do this directly from the bottle, or you can use a pipette).
- • Move the cubes to make colour mix and play with.