With the case of vinegar, the acid and other trace materials are generally spread out evenly throughout the material. In most cases, when you sample one area of the vinegar, it will look and test the same as another area. That being said, vinegar could be made into a heterogeneous mixture, especially if you were trying to add flavorings, color, or other additives to the material. Remember, the base of this substance is water.
Water will only absorb so much of a material before it comes saturated. If you attempt to put too much of a material in water, eventually the material will not dissolve, and certain areas will contain more or less of it.
As noted above, vinegar is made up of water and an acid. These materials are not bonded to each other. Because the water and the acid and other materials that made apple cider vinegar unique are not bonded to each other, there is more than one substance in vinegar. And when there is more than one substance element or compound in a material, it cannot be considered a pure substance.
A compound is formed when two separate and different materials element, molecule, or even another compound form a bond to each other. The acetic acid itself is however a compound because it consists of different elements that combine together chemically with definite ratio of composition. Compound is scientifically a material that consists of two or more elements that bond chemically. Compound always has a same ratio in composition. One example of compound is H2O or distilled water.
The molecule of H2O always has 2 hydrogen atoms and 1 oxygen atom, no matter where you find it in the world. In science, an element is a matter that consists of its own self. It cannot be broken down into other element. It only consists of 1 single type of atom. The ratio of water and acetic acid is not definite. In science, a mixture is a matter that consists of two or more elements or compounds that combine together without a definite ratio of composition.
It means that the same kind of mixture can have different ratio of composition and hence difference quality. Yes, compound also contains two or more elements but compound always has a definite ratio of composition. A vinegar contains water and acetic acid. It means that there is no definite ratio of composition in vinegar. Hence, vinegar is a mixture, not a compound. Flavorings may include sweeteners, such as sugar or fruit juices.
Infusions of herbs, spices and other flavors may be added, too. Vinegar is made from a variety of source materials. Each contributes its own unique flavor signature to the final product. Vinegar may be made from sugar cane juice, rice and other grains, grapes balsamic vinegar , coconut water, fruit wines, kombucha, or apple cider. The first fermentation changes sugar into alcohol, while the second fermentation changes alcohol into acetic acid. Actively scan device characteristics for identification.
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