Let your kids be mad scientists complete with bubbling beakers with these fun bubbles experiments. This safe science activity uses supplies you probably already have in your house to teach your kids about chemistry. These chemistry experiments for kids are fun with toddler, preschool, pre-k, kindergarten, first grade, 2nd grade, and 3rd graders too. This is not a baking soda and vinegar reaction, instead this chemistry for kids teaches how soda makers add fizz to their beverages!
Soft drink manufacturers add the fizz to their drinks by adding carbon dioxide (CO2) to the mix. CO2 is dissolved into the drink. When you open a can of a carbonated beverage, the pressure is released and the CO2 comes out of solution. The CO2, then, forms bubbles that rise to the top of the drink and attach to the sides of the container the beverage is in. If you look closely at a glass filled with a carbonated beverage, you can see that the bubbles initially form on the surface of the glass. Some remain there and others rise to the top and release the CO2 gas into the air. When the CO2 comes out of solution it always happens at a physical reaction point, such as the side of the glass.
Let’s experiment with this phenomena and see if we can change the reaction in some way with this bubbles experiments! This chemistry experiment for kids is a great way to make science fun while teaching kids at the same time. Try this bubble science experiments with preschoolers, kindergartners, grade 1, grade 2, and grade 3 students.
Chemistry experiments for kids
All you need are a few common materials you probabaly already have on hand!
- small jar or beaker
- clear carbonated beverage/soda
- food coloring
- table salt
- Fill the jar 3/4 full of soda
- Add a drop of food coloring just for fun
- Add 1 tablespoon of salt
Bubble science experiments
As we discussed before, CO2 is added to carbonated beverages to give them their fizzy bubbles. These bubbles form on reaction points, such as the sides of a drinking glass, when the pressure of the original container is released.
When the salt was added to the soda, more reaction points were added to the mix. CO2 came out of the solution on the sides of the salt crystals and formed bubbles. The mass of bubbles caused a foaming action.
Take this bubbles experiment further by adding different amounts of salt or adding a type of salt with larger crystals. Note the changes in the amount of bubbles that form.
Easy chemistry experiments for kids
The food coloring did not affect the reaction in these soda experiments. The addition of color can sometimes help to see the reaction easier. Also, you can use this bubbles experiment to learn about color mixing. Create two reactions side-by-side using two different colors, such as blue and yellow. As the foaming bubbles mix, note the colors that form.
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