chemistry and chemical
71Chemical engineering in Bangladesh — At the beginning of 20th century, the huge amount of chemical industry and their diversification needed experts who are not confined in industrial chemistry and mechanical engineering but also pioneer in process optimization. And the first… …
72Chemical weapons in World War I — A poison gas attack using gas cylinders in World War I. The use of chemical weapons in World War I ranged from disabling chemicals, such as tear gas and the severe mustard gas, to lethal agents like phosgene and chlorine. This chemical warfare… …
73Chemical property — A chemical property is any of a material s properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance s chemical identity.[1] Simply speaking, chemical properties cannot… …
74Chemical synthesis — In chemistry, chemical synthesis is purposeful execution of chemical reactions to get a product, or several products. This happens by physical and chemical manipulations usually involving one or more reactions. In modern laboratory usage, this… …
75Chemical force microscopy — Figure 1: Photograph of an AFM system which can be used for chemical force microscopy. Chemical force microscopy (CFM) is a variation of atomic force microscopy (AFM) which has become a versatile tool for characterization of materials surfaces.… …
76Chemical Society — The Chemical Society was formed in 1841 (then named the Chemical Society of London) as a result of increased interest in scientific matters. One of its aims was to hold meetings for the communication and discussion of discoveries and observations …
77Chemical oxygen demand — In environmental chemistry, the chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in water. Most applications of COD determine the amount of organic pollutants found in surface water (e.g.… …
78Chemical shift — In nuclear magnetic resonance (NMR) spectroscopy, the chemical shift is the resonant frequency of a nucleus relative to a standard. Often the position and number of chemical shifts are diagnostic of the structure of a molecule.[1][2][3] Chemical… …
79Chemical Society of Mexico — Sociedad Química de México Formation 1956 Headquarters Mexico City Location Mexico Official languages Spanish President Eusebio Juaristi …
80Chemical transport reaction — In chemistry, a chemical transport reaction describes a process for purification and crystallization of non volatile solids. The process is also responsible for certain aspects of mineral growth from the effluent of volcanoes. The technique is… …
