This hands-on science activity is just a little bit messy – and perfect for that little dinosaur lover in your life! This activity will have kiddos making their own dinosaur bath bombs! We recommend it for children 5 and up.
As with all science activities, safety is extremely important! We recommend wearing safety goggles and old clothing for this activity. Parent supervision is required.
Supplies You’ll Need:
- Tiny Dinosaurs
- Citric Acid
- Olive Oil
- Food Dye
- Baking Soda
- Mixing Bowl
- Paper Towels
- Pour 1/2 a cup of baking soda into the mixing bowl. Add a few drops of the food dye and mix it until the baking soda is completely colored.
- Add 2 tablespoons of the citric acid to the mixing bowl and stir it so that it mixes into the baking soda.
- Next add 1 teaspoon of the olive oil to the mixture.
- Select a small dinosaur and place it in the bowl. Slowly pack the powder mixture around the dinosaur until it’s completely covered and looks like an egg.
- Once you’ve completed this step, set it out on a paper towel to dry out overnight. Be careful that it does not get disturbed. If it does, repack the mixture around the dinosaur.
- The next day the egg should be completely dry. When your child next takes a bath, have them dip the egg in the water and observe what happens.
What Is Happening?
Once you put the hatching dinosaur egg in the bathwater, you will have noticed that the egg fizzes in the water and your dinosaur emerges. This process is the result of a chemical reaction between two main ingredients – baking soda and citric acid. The baking soda is what is known as a base, while the citric acid is an acid.When mixed together and then introduced to water, the two will react chemically and start to fizz. This fixing is the result of carbon dioxide being released into the water.
- Base – (n.) a substance that has a lot of hydroxide ions and a PH Scale of 7-14.
- Acid – (n.) a substance that has a lot of hydrogen ions and a PH Scale of 0-7.