Chemistry Chemistry The A15 phases are series of intermetallic compounds with the chemical formula A3B (where A is a transition metal and B can be any element) and a specific structure. Many of these compounds have superconductivity at around 20 K (-424°F), which is comparatively high and also in magnetic fields of tens of teslas (hundreds of kilogauss). This kind of superconductivity is an important area of as it has several practical applications. ...more on Wikipedia about "A15 phases"
Acid rain is defined as any type of precipitation with a pH of below 5.0. Normal rain has a pH which can range between 4.5 and 5.6 with an average value of 5.0. This natural acidity is caused by dissolved carbon dioxide dissociating to form weak carbonic acid. ...more on Wikipedia about "Acid rain"
In chemistry, analogs or analogues are compounds in which one or more individual atoms have been replaced, either with a different atom, or with a different functional group. Pharmaceuticals are one area in which a 'lead compound' found to have activity is elaborated by creating a family of analogs. ...more on Wikipedia about "Analog (chemistry)"
A base analog is a chemical that can substitute a normal nucleobase in nucleic acids. ...more on Wikipedia about "Base analog"
In chemistry, materials science, and other scientific disciplines, a bulk property of a substance is one that is independent of the amount of that substance being measured. ...more on Wikipedia about "Bulk property"
Catenation is the name of a special property of carbon (and also some other elements like silicon, germanium etc.). In this state it can form covalent bonds with another carbon atom (or Si, Ge etc.) and thus it can form chains and rings. Aliphatic and aromatic hydrocarbons are examples of catenation. ...more on Wikipedia about "Catenation"
A caustic substance, in chemistry, is one that causes corrosion, the deterioration of a material. A caustic substance can be acidic or basic, and concentrated solutions of acids and bases are common corrosive substances. Some sodium hydroxide, also called caustic soda, is one example. Caustic substances are harmful to living tissue and structures, but they have beneficial uses. For example, drain cleaners use caustic substances such as sulfuric acid to clear clogged drains. ...more on Wikipedia about "Caustic (substance)"
Chartered Chemist (CChem) is a chartered status awarded by the Royal Society of Chemistry (RSC) in the United Kingdom and by the Royal Australian Chemical Institute (RACI) in Australia. ...more on Wikipedia about "Chartered Chemist"
Chemical accidents are unanticipated releases, explosions, fires and other harmful incidents involving toxic and hazardous materials. While chemical accidents may occur whenever toxic materials are stored, transported or used, the most severe accidents tend to involve major chemical manufacturing and storage facilities. Significant events include the Bhopal Disaster of 1984, which released a highly toxic gas at a Union Carbide pesticides facility and killed more than 2,000 people. ...more on Wikipedia about "Chemical accidents"
A chemical change is a process in which reactants are changed into one or more different products. A chemical change occurs whenever new compounds are formed or existing compounds decomposed. During this reaction, chemical bonds between atoms are broken and new chemical bonds formed. This results in a rearrangement of the chemical bonds. ...more on Wikipedia about "Chemical change"
A chemical equation is a symbolic representation of a chemical reaction. It is a formula used to display different stages for chemical reactions, where chemical substances are changed into other substances. The elements and/or compounds to the left of the arrow in a chemical equation represent the reactants, the arrow represents the transition stage, and the species to the right of the arrow represent the products. The four basic chemical equations are: ...more on Wikipedia about "Chemical equation"
Chemical industry includes those industries involved in the production of petrochemicals, agrochemicals, pharmaceuticals, polymers, paints, oleochemicals etc. Chemical processes are used, including chemical reactions to form new substances, separations based on properties such as solubility or ionic charge, and distillations, in addition to transformations by heating and other methods. ...more on Wikipedia about "Chemical industry"
Chemical Laws are the Laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity of matter during an ordinary chemical reaction. Modern physics shows that it is actually energy that is conserved, and that energy and mass are related; a concept which becomes important in nuclear chemistry. Conservation of energy leads to the important concepts of equilibrium, thermodynamics, and kinetics. ...more on Wikipedia about "Chemical law"
A chemical reaction is a process that results in the interconversion of chemical substances . The substance(s) initially involved in a chemical reaction are called reactants. Chemical reactions are characterized by a chemical change and it yields one or more product(s) which are different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. ...more on Wikipedia about "Chemical reaction" Are you ready for shortopedia?
A chemical substance is any material substance used in or obtained by a process in chemistry. It can be an element, a compound, or a mixture thereof: ...more on Wikipedia about "Chemical substance"
in chemistry, a chemical trap is a chemical compound that is used to detect a certain molecule when ...more on Wikipedia about "Chemical trap"
Chemistry (derived from the Arabic word kimia, alchemy, where al is Arabic for the) is the science that deals with the properties of organic and inorganic substances and their interactions with other organic and inorganic substances. In the study of matter, chemistry also investigates the movement of electrons (see energy, physics, biology). Because of the diversity of matter, which is mostly composed of different combinations of atoms, chemists often study how atoms of different chemical elements interact to form molecules and how molecules interact with each other. ...more on Wikipedia about "Chemistry"
Chemistry resources is a collection of links and references that are useful for chemistry-related work. This includes free online chemical databases, publications, patents, computer programs, and various tools. ...more on Wikipedia about "Chemistry resources"
Chemurgy is a branch of applied chemistry that is concerned with preparing industrial products from agricultural raw materials. Popular during the Second World War, only within the last 20 years has interest in this field once again begun to revive. A prime example is the search for organic replacements for petroleum-based oil and gas (see biodiesel) and new food plants. ...more on Wikipedia about "Chemurgy"
Clandestine chemistry generally refers to chemistry carried out in illegal drug laboratories, but can include any kind of laboratory operation carried on in secret because of the illegality of its activities. It is important to distinguish between large and small scale clandestine labs. Some individual chemists work clandestinely in order to synthesize controlled substances for their own use in order to guarantee purity and quality. This is essentially an auto-emergent safety protocol --- something that would not be necessary if the substances were regulated. ...more on Wikipedia about "Clandestine chemistry"
Class A metals are metals that form hard acids. Hard acids are acids with relatively ionic bonds. These metals, such as iron, aluminum, titanium, sodium, calcium and the lanthanides, would rather bond with fluorine than iodine. They form stable products with hard bases, which are bases with ionic bonds. ...more on Wikipedia about "Classes of metals"
(Coal assay)
Moisture
...more on Wikipedia about "Coal assay"
In general, a colloid or colloidal dispersion is a one- phase system of two or more components; a type of mixture intermediate between homogeneous solution and heterogeneous mixtures with properties also intermediate between a solution and a mixture. The dispersed particles of a colloid will typically not diffuse across a membrane through which dissolved ions or molecules will cross. The dispersed phase particles are largely affected by the surface chemistry extent in the colloid and are characterized by particle interactions. ...more on Wikipedia about "Colloid"
Combinatorial chemistry involves the rapid synthesis and/or the computer simulation of a large number of different but structurally related molecules. ...more on Wikipedia about "Combinatorial chemistry"
In chemistry a convergent synthesis is a strategy that aims to improve the efficiency of multi-step chemical synthesis. In linear synthesis the overall yield quickly drops with each reaction step: ...more on Wikipedia about "Convergent synthesis"
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