With the 4M research kit, you can experiment and watch the submarine model sink and float with baking powder. On the back of the package there is a description of the research with images, as well as an explanation of the principle of operation.
Immersion
1. Open the top cover of the submarine. Fill the chamber with baking powder (not included). Place the submarine on a solid, level surface to check that the camera is half full.
2. Close the lid and remove excess baking powder from the outside of the submarine.
3. Immerse the submarine in water and shake it several times.
4. Release the submarine and watch as it sinks and appears above the water. If the boat does not sink, add baking powder. If the submarine does not float but continues to move up and down, the chamber is probably too full of baking powder. Remove some of the powder and try again.
How does it work?
The submarine is lowered because it is heavier than water. However, when water comes in contact with baking powder, carbon dioxide is released and the release of gas causes it to float. When all the carbon dioxide is released from the submarine (you will see bubbles), the submarine will sink again. This process will be repeated until the amount of leaven remaining in the chamber is reduced to such a level that the amount of carbon dioxide produced becomes insufficient for the submarine to float. The experiment can be repeated and shown to friends.
The Science research kit is suitable for boys from 5 years old. A great way to learn the basics of chemistry and physics. Development: thinking, imagination, curiosity, ingenuity. No batteries required.
