German version
Supermarket products:
| Dr. Oetker's "Whip it" (cream stabilizer)
| red tart glaze (ingredients: modificated starch, starch, gelling agent (carrageenin), acidifying agent (potassium tartrate), dye (Cochenille Red A), Firm: RUF Lebensmittelwerk KG (Germany) | Betaisodona ® solution | |
"Whip it" is a starch product. It binds the liquid parts of the whipped cream together. Betaisodona® solution is a non-specific antiseptic agent. It contains povidone-iodine (iodine complex). The desinfecting agent releases iodine, which desactivates viruses.
Glass wares:
| 2 gas collecting cylinder h = 10 cm d = 5 cm
| 2 Petri dishes d = 9 cm
| 2 beakers 50 mL
| snap-cap vial 20 mL
| 2 glass stirring rods | |
Experimental procedure:
Two gas collecting cylinders are each filled with 50 mL of water. One spatula full of cream stabilizer or tart glaze, respectively, is added to each of the cylinders. Then, each of the two solutions is mixed with 2 drops of Betaisodona® solution while stirring.
Result:
When drops of Betaisodona® solution fall into the solution containing "Whip it", a deep blue color appears. The iodine complex of Betaisodona® reacts with the tart glaze solution to form a brown color which turns purple and later blue.
Video clip (Download RealPlayer .rm file)