This term comes from the Latin "Acidus" whose meaning is "Sour" . Acid is a substance that, when dissolved in water, increases the density of hydrogen ions and when it combines with bases, an acid is capable of forming salts.
Acids can be in the form of solids, liquids or gases, everything will depend on the temperature. And they can also be as pure substances or solution. There are a great variety of acids among which we have: Acetic acid, is the one found in vinegar, and is produced by the oxidation of wine alcohol. Hydrochloric acid is a very strong type of acid, it is presented in the form of gas, it is made up of chlorine and hydrogen, this type of acid is very corrosive. Acetylsalicylic acid, this kind of acid can be found in aspirins, this acid is the product of a combination of salicylic acid and acetic acid, it has analgesic and antirheumatic properties.
The sulfuric acid, such acid is used in car batteries, and is the most use has, especially in industrial area, this acid is obtained from the sulfur dioxide, useful in creating fertilizer has to increase its production. Its main characteristic is its high level of corrosion, so much so that it is recommended to take precautions when handling it because it can cause burns. Benzoic acid is a solid acid widely used in pharmaceutical industries.
The citric acid, such acids can be found in fruits such as passion fruit and lemon among others. The acrylic acid, this acid is liquid - like and is used in the manufacture of plastic materials and paints. Acids have some properties among which we can mention: their sour taste, they are corrosive, they can burn the skin, they are excellent conductors of electricity in wet solutions, they evolve with active metals creating a salt and hydrogen.
In the field of health, uric acid is found, which is a type of organic acid composed of the combination of nitrogen, hydrogen, carbon and oxygen, which is found in urine and depending on the amount that a person has in their body you may have kidney problems from kidney stones.