1Add 2 tablespoons of calcium chloride to the bowl of water and mix it.
2Into the bottle, add a few drops of food coloring and a half teaspoon of sodium alginate.
3Cap the bottle immediately and shake it for 30 seconds. It can take some time to dissolve.
4Pour the liquid in the bottle, into the bowl (try to make one continuous stream of liquid).
5Wait 10 seconds and pull out the new substance.
How It Works
The chemical reaction between two natural resources (calcium chloride and sodium alginate) forms a synthetic material. Sodium alginate comes from algae and calcium chloride comes from rocks. The gel-like substance is formed because the sodium alginate reacts with the calcium chloride, to form calcium alginate. Fun fact: this synthetic material is used by doctors to help wounds heal faster.
Check out the Full Lesson on Synthetic Materials!
In this lesson, we learn that:
Synthetic materials are made by humans.
All synthetic materials are derived from Earth's natural resources.
They can be used as fuels, fabrics, medicines and more.