unsaturated are oils that have double bonds in their structure because there is not enough hydrogen atoms to bond with the carbon atoms. In such case, carbon atoms bond to each others to form double or triple bonds. adding iodine, saturates the oil as iodine atoms bond to carbon atoms as if they were hydrogen atoms.
This is an answer to the question that should read: How does iodine affect unsaturated fats?
Iodine shows its purple color if saturated fat is present in that food/drink. The longer it takes the iodine to clear, the more saturated fat there is i the food/drink.
Saturated fats are saturated with hydrogen atoms.
Saturated fat has all bonding positions where hydrogen atoms could bond occupied by hydrogen atoms.
Saturated fats are saturated with hydrogen atoms.
True of saturated fat is that, it has not a single set of double bond between two near by carbon atoms.
Fat can be either saturated or unsaturated. It can not be both at the same time. If there is one or more double bonds between carbon atoms, the fat become unsaturated. If all the bonds between carbon atoms are single bonds, the fat becomes saturated.
The fat molecule that has the most H, or hydrogen, atoms is the saturated fat molecule. This is because this particular molecule has no double bonds in its structure.
You have one or more double bonds between carbon atoms in unsaturated fat molecules. You have no such double bonds in the structure of saturated fat molecules. You have all the single bonds between the carbon atoms.
All fats contain chains of carbon atoms bonded to hydrogen atoms. In a saturated fat the carbon atoms in the chains are boned to as many hydrogen atoms as possible (that is, 2 each, with the last carbon bonded to 3) and all carbon-carbon bonds are single bonds. In an unsaturated fat some of the carbons are not bonded to the maximum number of hydrogen atoms, and those carbon atoms that are missing hydrogen atoms are double bonded to a neighboring carbon.
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Saturated fats have no double bonds in their chemical structure. They are “saturated” with hydrogen atoms. Because of their chemical structure, they have a solid consistency at room temperature.
An unsaturated fat is a fat or fatty acid in which there is at least one double bond within the fatty acid chain.Saturated fatty acids have no double bonds between the carbon atoms of the fatty acid chain and are thus fully saturated with hydrogen atoms.(Wikipedia)