Make a Fizzy Dino Egg
Make fizzy dinosaur eggs by molding baking soda shells around a toy dinosaur, decorate them, then pour vinegar to watch colorful fizz reveal the dino.
Step-by-step guide to make a Fizzy Dino Egg
Step 1
Gather all materials and set them on a tray or plate so everything is easy to reach.
Step 2
Put on a paper towel on your workspace to catch any mess.
Step 3
Measure 1 cup baking soda into a bowl and add 1/4 cup water.
Step 4
Stir the baking soda and water with a plastic spoon until it becomes a moldable dough like wet sand.
Step 5
Press a small handful of the dough into a hollow half-egg shape in your palm.
Step 6
Place the toy dinosaur into the hollow and cover it with more dough to form a full egg.
Step 7
Roll the egg gently between your palms to smooth and seal the seam into a round egg shape.
Step 8
Put the eggs on the tray and leave them to dry for 1 to 2 hours until they feel hard.
Step 9
Use coloring materials to decorate the outside of the dry eggs however you like.
Step 10
Pour some vinegar into a small cup using a plastic spoon if you need to move it to a tray spot.
Step 11
Drop 3 to 5 drops of food coloring into the vinegar and stir with the spoon.
Step 12
Place an egg on the tray and pour the colored vinegar over the egg to watch it fizz and reveal the dinosaur.
Step 13
Take a photo of your fizzy dino egg and share your finished creation on DIY.org
Final steps
You're almost there! Complete all the steps, bring your creation to life, post it, and conquer the challenge!
Help!?
Can I substitute other items if I don't have baking soda, a toy dinosaur, or food coloring?
Baking soda is required for the fizz so the reaction won't work without it, but you can replace the toy dinosaur with any small washable toy or wrapped candy (Step 5) and use liquid watercolors or diluted washable marker ink instead of food coloring for the vinegar (Step 12).
My dough won't hold together or the egg cracks while drying — what should I do?
If the mixture in Step 3 is too sticky or crumbly, add extra baking soda a teaspoon at a time and knead until it forms a wet-sand dough, press seams firmly in Step 6, and leave the eggs on the tray to dry longer than 1–2 hours (Step 7) to prevent cracking.
How can I adapt this Fizzy Dino Egg activity for different age groups?
For toddlers, have them help press dough and decorate pre-dry eggs (Steps 5 and 9) while an adult handles the vinegar pour (Steps 11–12), and for older kids let them measure (Step 2), mix (Step 3), experiment with color mixes in the vinegar (Step 12), and photograph their results for DIY.org (Step 13).
How can we extend or personalize the activity for more fun or learning?
To extend the activity, hide different tiny surprises in the dough (Step 5), press glitter or scented extracts into the shell before drying (Steps 4–7), paint with glow-in-the-dark or metallic colors (Step 9), and have kids time and compare how different vinegar colors or amounts affect the fizz reveal (Steps 11–12).
Watch videos on how to make a Fizzy Dino Egg
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🥚 Creative Dino Egg Craft! 🦕 Fun DIY for Little Dino Lovers!
Facts about chemical reactions for kids
♻️ Leftover vinegar from a fizz experiment can be reused as an eco-friendly cleaner, so there’s less waste!
🌈 A few drops of food coloring will give bright, colorful fizz without changing the reaction.
🧽 Baking soda is a super-safe, everyday ingredient used for baking, cleaning, and even brushing teeth.
🦕 Some dinosaurs were surprisingly small — a few species were about the size of a chicken!
🧪 When baking soda (sodium bicarbonate) meets vinegar (acetic acid) they make carbon dioxide gas — that’s the fizz you see!
How do I make a fizzy dino egg at home?
What materials do I need for fizzy dinosaur eggs?
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