Chemistry

Analytical Chemistry is the branch of chemistry principally concerned with determining the chemical composition of materials, which may be solids, liquids, gases, pure elements, compounds, or complex mixtures. In addition, chemical analysis can characterize materials but determining their molecular structures and measuring such physical properties as pH, color, and solubility. Wet analysis involves the studying … Read more

Chlorofluorocarbons are non-toxic, non-flammable chemicals that are mainly used in the manufacturing of aerosols, blowing agents for foams and packing materials, as solvents, and as refrigerants. They are classified as Halocarbons, a class of compounds that contain carbon and halogen atoms, and are amongst a group of substances called greenhouse gases. They eat away at … Read more

An American Chemist named Glenn T. Seaborg discovered plutonium in 1941 at Berkeley University in California. The discovery of Plutonium was not announced until 1946 because America was at war with Japan and Germany. Plutonium was named after the planet Pluto, after the planet Neptune in the solar system and Neptune gave its name to … Read more

Analytical Chemistry is the branch of chemistry principally concerned with determining the chemical composition of materials, which may be solids, liquids, gases, pure elements, compounds, or complex mixtures. In addition, chemical analysis can characterize materials but determining their molecular structures and measuring such physical properties as pH, color, and solubility. Wet analysis involves the studying … Read more

Silicon is the raw material most often used in integrated circuit (IC) fabrication. It is the second most abundant substance on the earth. It is extracted from rocks and common beach sand and put through an exhaustive purification process. In this form, silicon is the purist industrial substance that man produces, with impurities comprising less … Read more

Platinum is a relatively rare, chemically inert, metallic element. It symbol is Pt, atomic number is 78, and its atomic weight is 195. 09. Platinum is one of the heaviest substances known. One cubic foot of Platinum weighs 21 times as much as a cubic foot of water. A grayish-white metal, Platinum has a melting … Read more

The year, 600 BC. Solon, the legislator of the Athenians, contaminated the River Pleisthenes with hellebores (skunk cabbage) to give the defenders of Kirrha violent diarrhea leading to their defeat. This is the first recorded use of plants as a source of chemicals for warfare. Although not very well known, chemical and biological warfare has … Read more

Production: Although Helium is one of the most common elements in the universe it is a rare gas on earth. It exists in the atmosphere in such small quantities (less than five parts per million) that recovering it from the air is uneconomical. Helium is produced as a by-product of the refining of natural gas, … Read more

This essay concentrates on the heavy metal cadmium, and its occurrence in the environment, its pathways into and out of the human body and its movement into and out of Sewage sludge. Firstly, I will provide a clear definition of the Heavy Metal Cadmium. What is Cadmium? Cadmium is a naturally occurring element in the … Read more

Carbohydrates and lipids/fats are a very important part of our lives. They have many similarities and differences among each other, which distinguish them from other macromolecules. Carbohydrates, which include sugar and their polymers, are used by organisms for fuel and building material. They come in many various forms going from simplicity to complexity. The simplest, … Read more

Periodic Table Dmitri Mendeleev was born in Tobolsk, Siberia; on February 7, 1834 . He was the youngest of 14 children born to Maria Dmitrievna Korniliev and Ivan Pavlovitch Mendeleev. His father was director of the local gymnasium. Maria Korniliev’s family settled in Tobolsk in the early 1700’s and introduced paper- and glass-making to Siberia. … Read more

Aluminum sulfate reacts with phosphates to create aluminum phosphate and a sulfate. The conversion of the phosphate to aluminum phosphate is very important because this allows the phosphate to be easily extracted. This manipulation is used today in industrial waste treatment sights. The removal of phosphates is very important for if phosphates are not removed, … Read more

Just after midnight on December 3, 1984, a pesticide plant in Bhopal, India had a chemical leak accident. The chemical that was released into the air is called methyl isocyanate, or MIC, used to make pesticides. This chemical is tremendously harmful and fatal to humans, livestock, and crops. Only a short-term exposure may cause death … Read more

Puget Sound Report Details Industry’s Toxic Chemical Shipyards, oil refineries, and pulp and paper mills put the health of Puget Sound at risk by not fully meeting their responsibility to control the toxic chemical pollution they generate, according to a detailed report by People For Puget Sound based on the environmental records of 31 facilities. … Read more

Chemistry is the science of the composition and structure of materials and of the changes that materials undergo. It is also used in improving standards of living, making it possible for such substances as rubber, nylon, and plastics to be made from completely different materials. New materials and new properties of old materials are always … Read more

There are many ways to examine the subject of alchemy, including alchemy as a source of symbolism, psychology, and mysticism. It has also been an influence on the world view of various writers, artist, and musicians. The focus of this report is alchemy as a pre-chemistry, which gave a new impulse towards the preparation of … Read more

The environment can be defined as the surroundings in which as organism lives, including the climate, the physical and chemical conditions of its habitat and its relationship with other living things. Given the above understanding, it is therefore important that the right environment factors are in existence for some chemical reactions to take place. In … Read more

In our society it’s a given that suntans look attractive, and it’s also understoud that they can be harmful, and downright unhealthy. So what does this mean? This means that there is a multi-million dollar a year industry that researches and manufactures UV absorbing and blocking lotions that are designed to prevent skin damage from … Read more

Ozone (O3) is a molecule consisting of three oxygen atoms, similar to the oxygen we breathe (O2), however oxygen consists of only two oxygen atoms. In the stratosphere, a region high up in the upper atmosphere, light rays are responsible for the breaking down of oxygen (O2), breathable oxygen into its two separate oxygen atoms. … Read more

Magnesium is the twelfth element on the periodic table. It is located in the second group called the alkaline earth metals. Natural magnesium contains three different isotopes, and there are twelve others that are recognized. Seawater is a rich source of magnesium in the form of salt. Magnesium is the eighth most abundant element in … Read more

John Dalton (1766-1844), was a British chemist and physicist, who developed the atomic theory upon which modern physical science is based. Dalton was born on September 6, 1766, in Eaglesfield, Cumberland County, England. He was the son of a weaver and was initially educated by his father and then at Quaker school in his hometown, … Read more