What we are and what we eat are the result of a large number of chemical reactions, which you do not even suspect. Some of these transformations of matter seem invisible to you. But with this simple and fun experience, you will see that chemical reactions can also be seen in a funny way!
You will need:
From 6 years
Difficulty : easy
Make a volcano with the sand on the baking plate.
Position your glass to form the crater and finalize your volcano by putting enough sand to cover the edges.
In this glass, add two teaspoons of baking soda and 2 tablespoons of water.
Then add the red food coloring and a little washing-up liquid.
With a spoon, gently mix the mixture.
Now is the time to have fun! Pour vinegar in the crater and observe!
An effervescent reaction in the volcano?
In contact with the vinegar, you observe a significant foam that leaves the volcano immediately, like lava after a volcanic eruption. This foam is the result of a chemical reaction between vinegar and baking soda. We’re talking about effervescence. It means that a big quantity of gas escapes from a liquid.
Why does it react?
Vinegar is what we call “an acid”. While baking soda is “a base”. When these two compounds react, they form, among other things, water and carbon dioxide. The bubbles you observe are carbon dioxide which escapes from the reaction. The famous greenhouse gas.
This gas is not dangerous and it composes our atmosphere.
What is the detergent used for?
The reaction between the vinegar and the baking soda is instant, as you can see. The addition of dishwashing liquid makes it possible to obtain a thick foam to form beautiful lava that drips slowly on the sides of your volcano. Like a real one!
Did you know?
The reaction between vinegar and baking soda can be used to degrease oily surfaces. It’s a greener solution than the products you can find in the supermarket.