A drop of iodine accidentally falls on a piece of paper. Predict the color change, if any, and provide an explanation for your prediction.
2006-10-02 11:10:28 · 5 answers · asked by many men 1 in Science & Mathematics ➔ Biology
Iodine tests for the presence of starch which is commonly used to size(coat) paper. The iodine will turn blue-black.
2006-10-02 11:16:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It's gonna turn blue. Iodine reacts with starch to form a dark blue product and cellulose (the principal component of paper) is a starch polymer.
2006-10-02 15:56:23 · answer #2 · answered by sdc_99 5 · 0⤊ 0⤋
Iodine always changes starch to blue,so this change predict that there is starch material in the paper.
2006-10-02 11:46:59 · answer #3 · answered by moosa 5 · 0⤊ 0⤋
the color would change, due to the cellulose in paper which is a carbohydrate.
2006-10-02 11:15:02 · answer #4 · answered by pecora2404 2 · 0⤊ 0⤋
depends on the type of paper.
2006-10-02 11:18:05 · answer #5 · answered by Eric 3 · 0⤊ 0⤋