What will happen when you mix saliva, water, gelatin? Then, mix starch, water, iodine?
Thank you very much. I have tried it, and wanted to know if others had gotten the same results.
I have another experiment that I am not clear about the results. Any help? Put water and manganese dioxide powder in test tube, see what happens. Then put sand in the mixture. Results? Then,put liver in it. What happens? Thanks for helping.
When you mix saliva, water, and gelatin together, you will observe that gelatin will not dissolve completely. Gelatin is a protein derived from collagen, and it forms a network-like structure in water. Saliva contains enzymes called amylases that break down starch, but their presence alone does not have a significant effect on the gelatin. The gelatin will retain its gel-like consistency because it is resistant to the enzymes found in saliva.
Now, let's move on to mixing starch, water, and iodine. When starch is combined with water, it forms a suspension, which means that the starch particles are dispersed throughout the water but do not dissolve. When iodine is added to this mixture, it forms a dark blue-black color. This reaction happens because iodine molecules can form a complex with the starch molecules, resulting in the color change. This is actually a common test for the presence of starch in biological or food samples.
In summary, mixing saliva, water, and gelatin will not have a significant effect on the gelatin itself. On the other hand, mixing starch, water, and iodine will cause the iodine to interact with the starch and produce a dark blue-black color.