Over the last few weeks, Hawk Class have been constructing, painting and now mixing the ingredients to make an erupting volcano. Today, we finally got to complete the experiment and the children began to understand the chemical reaction that occurs between the acid (vinegar) and alkali (bicarbonate of soda). When the two are mixed, bubbles of carbon dioxide are created and these bubbles are trapped by the washing up liquid because of the high levels of viscosity! How fascinating!
Here are some photos of the process:
Constructing our volcano bases
Adding paper mache
Painting our volcanoes
Creating our chemical reaction