Description
Baking Soda Dinosaur Eggs are a fun, fizzy kitchen project that brings pure joy to kids of all ages! These magical eggs hide tiny dinosaur toys inside and create an exciting eruption when cracked open with vinegar.
Ingredients
2 cups baking soda,
1/2 cup water,
1/2 cup cornstarch,
1 teaspoon white vinegar,
Food coloring,
Small plastic dinosaur toys,
Spray bottle filled with vinegar,
Optional: glitter for sparkle.
Instructions
Combine baking soda and cornstarch in a large bowl. Slowly add water, stirring as you go. The mixture should feel like wet sand. Add the teaspoon of vinegar and watch it fizz slightly – this is normal!
Divide your mixture into separate bowls. Add a few drops of food coloring to each bowl and mix well until the color is evenly distributed. Kids can help with this fun part!
Take a handful of colored mixture and press it firmly in your palm. Place a small dinosaur toy in the center, then add more mixture around it, pressing firmly to completely encase your dinosaur. Shape it into an egg form. Pack it tightly! Set each egg on your parchment-lined baking sheet.
This is the hardest part for impatient kids! Let your dinosaur eggs dry completely at room temperature for 24-48 hours. They’re ready when they feel completely hard and dry to the touch.
Place eggs in a large plastic basin or tray. Give each child a spray bottle filled with white vinegar. Let them spray the eggs and watch as they fizz, bubble, and slowly dissolve to reveal the hidden dinosaurs inside!
Notes
The mixture should feel like damp sand at the beach – perfect for building sandcastles. That’s the consistency you’re looking for. Pack the eggs TIGHTLY!
Loose eggs will crumble before they even dry. If eggs keep crumbling as you form them, add water just a teaspoon at a time until the right consistency. Smaller eggs dry faster (12-24 hours) but bigger eggs create more dramatic fizzing. Speed up drying by placing eggs in a sunny window or using a fan to circulate air.
Store completely dried eggs in an airtight container for up to 2 weeks before use. Make a few extra eggs without dinosaurs as “test eggs” for kids to practice spraying technique.
- Prep Time: 20 minutes
- Cook Time: 0 minutes
- Category: Kids Activity
- Method: No Cook
- Cuisine: Activity