Events where there are chemical changes determined by the atomic and molecular composition and structure of the substances involved. Absolute zero 0 k or 273 c or 459 f is the temperature at. Chemistry vocabulary terms you should know thoughtco. For example, color isnt a chemical property because you dont need to change something chemically to see what color it is. The penetration of a solid substance by a liquid as by capillary, osmotic, solvent or chemical. Chemistry in contrast to physics is involved with the change of the outer electronlayers only, whereas physics involves the state of the nucleus as well. Glossary of chemistry terms and definitions science struck. Explanations and definitions were compiled from various sources, but were gathered mainly from three sources. In cases where more than one definition is in use or where terms are defined differently when viewed from. Glossary of selected terms, abbreviations and organizations a aaee american academy for environmental engineers. The substance may disappear by being changed to another chemical by bacteria, sunlight, or other chemical processes. Instead, many have recommended the use of terms that reflect a disorder e. Glossary the following glossary provides brief explanations of acronyms and common terms frequently used by chemical manufacturers in their sdss.
This is a list of common chemical compounds with chemical formulas and cas numbers, indexed by formula. This is a temperature reading made relative to absolute zero. Glossary of wastewater terms activated sludge sludge that has undergone flocculation forming a bacterial culture typically carried out in tanks. Glossary of common msds terms excerpt from the msds users guide, courtesy of shell oil company.
Confused by some of the terms youve heard in the chemical manufacturing industry. The science that studies the properties of substances and how substances react with one another. For instance, the absorption of lead and cadmium is increased if the food is deficient in calcium or iron source. Over a period of time, the many definitions in this field have undergone several changes due to the development of new theories, and discovery of new chemical substances and phenomena. Several dozen neurotransmitters have been identified in the brain. Chemical engineering vocabulary 5 about the book about the book the chemical engineering vocabulary was written for students and young professionals in chemistry, mechanical engineering, chemical engineering and economics, who have to do with chemical engineering in an academic or industrial setting. The recipe that describes what you need to do to make a reaction take place. Second, denaturing can mean breaking down the threedimensional structure of a molecule, such as a protein is denatured when exposed to heat. Key brain terms glossary explore neuroscience dana.
Accused the person that is charged with a crime and has to go to criminal court. As t hese terms might be mentioned in the field, this glossary can be used as a n easily accessible and effective reference for unknown terms. See conversion charts for specific conversion factors. Confucius many thanks to the students and other users of this web site who have suggested additional terms for inclusion. A chemical which either destroys or inhibits the growth of microscopic and submicroscopic organisms. It is not an exhaustive list, and terminology used in any particular program may differ from this, and may be determined by local practice, policy and procedure. Glossary absolute zero the coldest temperature possible. Each link leads to a more comprehensive discussion of the word. The term activated sludge refers to a brownish flocculent culture of organisms developed in aeration tanks under controlled conditions. This glossary will be added to over time in the early stages there will. Consequently, instead of describing someone as a drug abuser, it may be less stigmatizing and more medically accurate to describe them as a person with, or suffering from, addiction or. Sometimes called a spike or described as a neuron firing, an action potential occurs when there is a significant increase in the electrical activity along the membrane of a nerve cell.
A comparative analysis of two or more interventions against their health and economic outcomes. Acknowledgment saying, testifying, or assuring that something is true. One of the four basic types of reasoning applied to intelligence analysis, it is the process of generating a novel hypothesis to explain given evidence that. Acknowledgment of satisfaction of judgment a court form that the person who. Basic chemistry vocabulary list absolute temperature. This ratio is an indicator as to how rapidly the pure vapor will settle out or rise if pushed into the air. Illustrated glossary of organic chemistry a product of the institute for reduction of cognitive entropy in organic chemistry the beginning of wisdom is to call things by their proper name. Glossary of terms this glossary includes a collection of the terms used in this manual and an explanation of each term. Common mechanical engineering terms ball and detent n a simple mechanical arrangement used to hold a moving part in a temporarily fixed position relative to another part. Glossary of abbreviations, definitions and symbols. Hazard a chemical, substance, or an exposure that can adversely affect health. Wastewater terms and glossary ecologix is a rich resource of wastewater treatment knowledge.
This module was written by chemical engineers, and most of the examples have been drawn from this field. Glossary balanced equation a chemical equation in which the numbers of each type of atom on both sides of the equation are equal. Anionic flotation reagents are negatively charged collectors of various c x basis and various molecular weights generally used for flotation of gangue minerals, such as iron and aluminum from sand or as a primary collector in phosphate flotation. Bases have a slippery feel and turn litmus paper blue. Several terms used in the module may confuse people unfamiliar with this discipline. Chemical terms glossary chemical manufacturing industry terms. Antiwear additive compounds which form, or react to form, thin films on highly loaded parts in operation to prevent metal to metal contact, thereby reducing friction at the point of contact. The sum of the available pressure within a vessel, pipe, etc. Chemistry is a physical science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions. Glossary of selected terms, abbreviations and organizations. Chemical substance that is relatively free of impurities.
If you remember that temperature is a measurement of how much atoms move around in a solid. Addition reaction a reaction in which the double or triple bond of an unsaturated compound opens continue reading. If the ratio is greater than 1, the benefits outweigh the costs. Terms that are italicized are also defined in this glossary. This section is intended to explain some of these terms in a simple manner. Contact us and wed be glad to discuss any of the terms provided below. This complements alternative listing at inorganic compounds by element. If youre struggling to find what youre looking for here, give us a call or contact us via our website and one of our technical team will be happy to help 8d problem solving model.
Chemical or organic substances that might be used on cannabis plants to protect. Chemistry vocabulary definitions of chemistry terms. This glossary of terms used in cement, concrete cement analysis is available for free download. Glossary of some terms used in cement, concrete and in the. To the extent that definitions and explanations provided in this glossary differ from those in epa regulations or other official documents, they are intended for use in understanding this manual only. If the density of a substance is compared with water. There is no complete list of chemical compounds since by nature the list would be infinite. Nuclide an atom tiny elements that make up everything, including humans characterized by the number of protons and neutrons in the nucleus and the amount of energy it contains.
In the human body, the substance may disappear by being changed to another substance and then leaving the body, or simply leaving the body. The ball slides within a bored cylinder, against the pressure of a spring, which pushes the ball against the detent, a hole of smaller diameter than the ball. A chemical that acts as a messenger between neurons and is released into the synaptic cleft when a nerve impulse reaches the end of an axon. This is a way of protecting handlers, consumers and the environment as it warns them of dangers and precautions to take when handling a particular package that may present a hazard. The definitions contained in this chemical glossary are merely generic definitions that may prove helpful to those using this web site.
Addition polymer a polymer made by the combining together of small unsaturated molecules of the same compound. We hope you find it useful please do distribute it freely to any colleagues who may also benefit from it. First, it can refer to any process used to make ethanol unfit for consumption denatured alcohol. Requests for permission to reproduce or translate all or any part of the material published herein should be addressed to the director, american petroleum institute, production department, 2535 one main place, dallas, tx 752023904. Chemistry is a branch of science that deals with the study of the behavioral attributes of various substances, their chemical composition, their chemical reactions and so on. This list of terms has been created from various sources used by safes. Total benefits divided by total costs is called a costbenefit ratio. Chemical in tobacco that causes and maintains the powerful addicting effects of tobacco products. Glossary of customs and trade terms b bl abbreviation for bill of lading.
This glossary of engineering terms is a list of definitions about the major concepts of engineering. It is the editors hope that the second edition of the mcgrawhill dictionary of chemistry will serve the needs of scientists, engineers, students, teachers, librarians,andwritersforhighqualityinformation,andthatitwillcontribute toscientific literacy and communication. Glossary of common laboratory terms page 3 of 8 file. Chemical equilibrium refers to the state in a reversible reaction when the rate of the forward reaction is. Addictionary glossary of substance use disorder terminology. There are elements for which spellings may differ, such as aluminum. It is also sludge floc produced in wastewater terms and.
A glossary of requirements engineering terminology. The terms contained within this glossary are general definitions and are accurate as they relate to water analysis, water treatment, and hach company products. They do not supercede, nor are they intended to supercede, the definitions or specifications that may apply to various technical terms as they are used in specific chevron phillips chemical documents. Sep 15, 2019 this alphabetical chemistry dictionary offers definitions and examples of important chemistry and chemical engineering terms. Disclaimer the information is pr ovided as a glossary of related terms a nd is not intended to either condone. Chem chemistrythe scientific study of the properties, composition,andstructureofmatter,thechangesinstructureandcomposition ofmatter,andaccompanyingenergychanges. A acute effect an adverse effect on a human or animal body, with. This glossary of chemistry terms is a list of terms and definitions relevant to chemistry, including chemical laws, diagrams and formulae, laboratory tools, glassware, and equipment. Properties that can only be described by making a chemical change by making or breaking bonds. It is also a receipt for cargo accepted for transportation, and must be presented for taking delivery at the destination. Read on to find out more about the many terms and definitions associated with this stream. This glossary aims at collecting the existing knowledge on requirements engineering terminology and defining the core terminology carefully and consistently.
Chemical terms glossary chemical manufacturing industry. Activation energy the minimum amount of energy which colliding molecules must have before they can react together. Glossary accreditation accreditation is an evaluative process in which a health care organization undergoes an examination of its policies, procedures and performance by an external organization accrediting. In this section, we have included those basic terms that are relevant to modern chemistry. This is a list of common chemical compounds with chemical formulae and cas numbers, indexed by formula. They are for reference only and are not intended to be applied outside the scope of these areas. Chemistry in contrast to physics is involved with the change of the outer electronlayers only, whereas physics.
A collection of terms from the chemistry 2007 syllabus glossary and senior sciences curriculum glossary. Fume a liquid mist or solid particle suspension that has condensed from the vapor state. Advanced primary treatment the use of special additives to raw wastewater to cause flocculation or clumping to help settling before the primary treatment such as screening. Wisdom begins with the definition of terms socrates. Key brain terms glossary explore neuroscience dana foundation.
339 1361 77 170 512 497 1291 535 1189 1537 1374 256 930 1322 1288 785 871 791 1067 1553 790 1392 570 184 583 1010 1553 937 810 658 1191 1072 456 477 1058 868 1563 276 642 230 1448 628 261 344 435 524 335 121 1426 1151 36