Element Names and Numbers All of the elements have been named. Some of these names are familiar to us, such asnitrogenandsodium, and some are less familiar, such asdysprosiumandroentgenium. We can also name elements using their atomic numbers. For example, element 1 is hydrogen, element 2 ...
definitionofelement元素的定义 系统标签: elementdefinitionsubstancesinterconverted元素allotropy LetterDefinitionof‘element’PeterG.NelsonDepartmentofChemistry,UniversityofHull,HullHU67RX,UKe-mail:P.G.Nelson@hull.ac.ukReceived7July2006InarecentpaperIshowedhowbasicchemicalconceptscanbedefinedatamacroscopiclevel(Nelson...
atomic mass,atomic weight,relative atomic mass- (chemistry) the mass of an atom of a chemical element expressed in atomic mass units Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. Want to thank TFD for its existence?Tell a friend about us,...
Learn about elements in chemistry. Discover the element definition in chemistry, what makes an element, parts of an element, and what is the...
Presents the viewpoints on the definition of chemical elements for standardization in the field of science. List of fussy concepts on chemistry; Recounts on the meaning of chemical element; Characterization of the chemical element through isotopicity.Gluck...
Definition of Atom What is an Atom? The atom is the smallest object that retains the properties of anelement. Atoms are composed ofelectronsand anucleus. The nucleus contains protons and neutrons. All atoms areelectrically neutral, because every atom has an equal number of electrons and protons...
The meaning of ALCHEMY is a medieval chemical science and speculative philosophy aiming to achieve the transmutation of the base metals into gold, the discovery of a universal cure for disease, and the discovery of a means of indefinitely prolonging life
Most elements are generally stable, a small amount of natural transformation of one element to another also occurs in the decay of radioactive elements as well as other natural nuclear processes Questions: Questions. A substance that cannot be broken down into a simpler form by ordinary chemical ...
Define element. element synonyms, element pronunciation, element translation, English dictionary definition of element. n. 1. A fundamental, essential, or irreducible constituent of a composite entity. 2. elements The basic assumptions or principles of a
Element definition: a component or constituent of a whole or one of the parts into which a whole may be resolved by analysis. See examples of ELEMENT used in a sentence.