Chemistry is the science that studies the properties, composition, and structure of substances (defined as elements and compounds), as well as the transformations they go through and the energy released or absorbed during these processes. Chemistry class help services is a service that provides assistance with online Chemistry class help. To ask them to take my Chemistry class, you can use Chemistry class help. Every substance, whether naturally occurring or artificially created, is made up of one or more of the hundred-odd species of atoms known as elements. Although these atoms are made up of more elementary particles, they are the fundamental building blocks of chemical substances; for example, there is no quantity of oxygen, mercury, or gold smaller than an atom of that substance. Thus, chemistry is concerned with the properties of atoms and the laws governing their combinations, as well as how knowledge of these properties can be used to achieve specific goals.
The great challenge in chemistry is to develop a coherent explanation for the complex behavior of materials, including why they appear as they do, what gives them their enduring properties, and how interactions between different substances can result in the formation of new substances and the destruction of old ones. Chemists have struggled to develop theories of matter that satisfactorily explain the material world since the earliest attempts to understand the material world in rational terms. The ordered assembly of indestructible atoms into small and large molecules, or extended networks of intermingled atoms, is widely accepted as the foundation of permanence, whereas theories of change are based on the reorganization of atoms or molecules into different arrangements. Thus, chemistry is the study of the atomic composition and structural architecture of substances, as well as the various interactions between substances that can result in unexpected, often violent reactions.
Chemistry is also concerned with the use of natural substances as well as the creation of artificial ones. Cooking, fermentation, glass making, and metallurgy are all chemical processes that have existed since the dawn of time. Today, the fruits of chemical technology include vinyl, Teflon, liquid crystals, semiconductors, and superconductors. The understanding of the marvelous and complex chemistry of living organisms advanced dramatically in the twentieth century, and a molecular interpretation of health and disease holds great promise. Modern chemistry investigates materials as small as single atoms and as large and complex as DNA (deoxyribonucleic acid), which contains millions of atoms, using increasingly sophisticated instruments. New substances can even be designed to have desired properties before being synthesized. The rate at which chemical knowledge is accumulating is astounding. Over time, over 8,000,000 different chemical substances, both natural and man-made, have been identified and produced. As recently as 1965, the figure was less than 500,000.
Those associated with the industry are
inextricably linked with the intellectual challenges of chemistry. In the
mid-nineteenth century, German chemist Justus von Liebig observed that a
country's wealth could be measured by the amount of sulfuric acid it produced.
This acid, which is required in many manufacturing processes, is still the most
important chemical product in industrialized countries today. As Liebig
recognized, a country that produces a large amount of sulfuric acid has a
strong chemical industry and an overall strong economy. All highly developed
countries manufacture, distribute, and use a diverse range of chemical
products. Indeed, the “iron age” of civilization is being replaced by a
“polymer age,” as the total volume of polymers produced in some countries now exceeds
that of iron.
