Iodine test for starch. Test tube showing a black colour that is the positive result of the test for starch using iodine. The starch,which was from a piece of bread,is a long coiled molecule. Iodine combines with the starch and ends up in the coil,which is why the iodine turns from light brown to black | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Andrew Lambert Photography |
Taille de l’image : | 3643 px × 4867 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |