Men who play guitar are sort of a perfectionist. They are very particular about things in their life in general. The right chord, the right pitch, the right music, the right rhythm etc. They may not know something about everything, but they will definitely know everything about something.
The starch test. Many different food groups contain a carbohydrate known as starch. Using an iodine solution, you can test for the presence of starch. When starch is present, the iodine changes from brown to blue-black or purple. change of color to a blue-black or purple color suggests that starch is present. If there is no change in color, this suggests no starch is detectable. Note the change of the iodine to black on the potato (right) but not the apple (left). (10% Tincture of iodine.) Potato contains starch, but apple does not.
Soluble starch solution is added. Only iodine element in the presence of iodide ion will give the characteristic blue black color. Neither iodine element alone nor iodide ions alone will give the color result.Source(s): http://wiki.answers.com/Q/What_happens_w... http://www.elmhurst.edu/~chm/vchembook/5...est Answer: If Iodine is added to a Starch solution, they react with eachother and the Iodine darkens to an almost pitch black. However, if Iodine is added to a solution containing no Starch, it will show up only as an extremely pale brown.