Starch: formula, properties, and more

Chemistry – a unique and interesting science, which can explain many processes happening all around us in life. For example, why iron rusts gradually, and also why aluminum spoon heated so quickly if it is dipped in hot tea. Chemistry surrounds us everywhere: acetic acid or vinegar, sodium chloride or known to all salt, and also such substances as iodine, chlorine, alcohol, and many others. But there is in chemistry is a substance which is known to everyone, and it is called starch. Starch can be obtained and the chemical method, but most often it is extracted from potatoes. Let's take a closer look at everything that is connected with it, from the chemical formula to its properties and the starch can be recognized.

Starch, the formula provides as follows: С6Н10О5, has a number of interesting properties. For example, everyone's favorite jelly stiffens only for the reason that it contains a sufficiently large quantity of starch. Looks like a normal starch powder, odorless, almost devoid of taste, and the most interesting is that it creaks, if it is a little rubbed. This physical property of starch because the starch molecules are big enough.

In General, starch, formula and some its properties were discovered relatively recently. Starch is produced by plants, and not only potatoes, but also others, such as, for example, corn and wheat. In the potato starch contains only twenty percent, and in wheat and corn grains the amount exceeds seventy percent. Starch is formed when photosynthesis is a compound of six molecules of carbon dioxide and five water molecules, whereupon one starch molecule and six oxygen molecules.

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As mentioned above, the chemical formula of starch contains six carbon atoms, ten hydrogen atoms and five oxygen atoms. It says not only that the starch molecule is very large, but also that it is completely organic in origin, i.e., is due to the section of chemistry, called organic matter. This substance is considered to be a complex, refers to the section of the polysaccharides, although sugar or a similar substance it is not. Starch refers to organic substances containing oxygen, or another oxygen-containing organic substances.

The Structural formula of starch is also considered complex, its structure can be viewed on the Internet, so as to pass on the letter, it is simply impossible. We can only say that the starch, the formula it more precisely, IT contains multiple groups, each of which is connected to a carbon atom. Many people confuse this molecule with a molecule of any alcohol, when you hear about the group but really in the molecule С6Н10О5 lies the starch.

If You want to recognize the starch, You don't need much and long over this thinking. Qualitative reaction for the presence of starch in the substance is as follows: in a test tube, just drip a few drops of iodine solution. If the solution becomes immediately Sneem, then You can certainly sign the test tube and be sure that it is starch. If you want to check the reaction in lomagna conditions, then take a small potato, cut it, then gently pipette put a few drops of iodine (that is sold in pharmacies for burns wounds). After some time You will see obvious effect qualitative reactions for starch potato in the place where he had got the iodine will gradually turn blue.

So now You know about starch a lot (what is starch, the formula, properties and qualitative reactions). Of course, all the above information is not complete, but if You are preparing for a test on organic chemistry, it will certainly help You.