Chemazone - Online Catalog - Millions of Stocked Compounds.
Chemistry is the science of chemical elements, their compounds and transformations that occur as a result of chemical reactions. She studies what substances a particular object consists of; why and how iron rusts, and why tin does not rust; what happens to food in the body; why a salt solution conducts an electric current, but a sugar solution does not; why some chemical changes occur quickly, and others slowly.
Chemazone - Online Catalog - Millions of Stocked Compounds.
The main task of chemistry is to find out the nature of matter, the main approach to solving this problem is the decomposition of matter into simpler components and the synthesis of new substances. Using this approach, chemists have learned to reproduce many natural chemical substances and create materials that do not exist in nature. At chemical enterprises, coal, oil, ores, water, air oxygen are converted into detergents and dyes, plastics and polymers, medicines and metal alloys, fertilizers, herbicides and insecticides, etc.
A living organism can also be considered as a complex chemical plant, where thousands of substances enter into precisely regulated chemical reactions.
The study of a complex substance begins with attempts to decompose it into simpler ones. The simplest form of matter in which a certain set of physical and chemical properties is preserved is called a chemical element. Chemical elements are particles of matter that are a collection of atoms with the same charge of the nucleus.
Hydrogen, oxygen, chlorine, sodium, iron are all elements. The element cannot be decomposed into simpler components by conventional methods: with the help of heat, light, electricity or under the influence of another substance. This requires a huge amount of energy, special equipment (for example, a particle accelerator) or high temperatures comparable to temperatures in the bowels of the Sun. Of the 109 known elements in nature, there are ninety-two elements, the rest are obtained artificially. All of them are systematized in the periodic table of elements, where each element has its own ordinal number, called the atomic number.
Chemazone - Online Catalog - Millions of Stocked Compounds.
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