Description
A fun, fizzy beach-themed science experiment where kids build and dissolve sandcastles using baking soda, vinegar, and colorful ingredients. Great for STEM learning and sensory play!
Ingredients
1 to 3 boxes baking soda
Water (just enough to form a moldable texture)
1 or more cups vinegar
Blue food coloring (for ocean effect)
1 to 3 teaspoons clear dish soap (for extra fizz)
Molds (cups, bowls, sandcastle molds)
Plastic sea creatures, shells, or small toys (optional)
Instructions
Make the Sandcastles: Mix baking soda with water until it feels like wet sand. Press into molds. Freeze for 30 minutes if desired.
Set the Scene: Place on a tray and decorate with toys.
Make the Fizz Potion: Mix vinegar, food coloring, and dish soap in a cup.
Fizz Time: Pour the colored vinegar over the sandcastles and watch them bubble and melt!
Notes
Try different colors or add glitter for extra fun. Use a tray or outdoor setting for easier cleanup.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Category: Kids Activity
- Method: Hands-on Experiment
- Cuisine: N/A