Go Green! - Carbon dioxide
In their last Go Green lesson, students learned a lot about carbon dioxide. First they read the composition of the orangeade powder, and then dissolved it in water. Thanks to this, they learned that carbon dioxide is a product of the reaction of citric acid with sodium carbonate. Subsequent experiments involved the use of baking soda and vinegar. The students found that carbon dioxide also appears in this reaction.
The second task turned out to be quite fun because it needed a diaper to complete it. The students checked how much water it could hold, and they also got to know sodium polyacrylate. It is a polymer that can absorb 100 to 1000 times its weight of water.