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This page is a glossary of chemistry terms. Chemistry has an extensive vocabulary and a significant amount of jargon. This is a list of chemical terms, including laboratory tools, glassware, and equipment. Chemistry itself is a physical science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions. ==A== *absolute zero - a theoretical condition concerning a system at zero Kelvin where a system does not emit or absorb energy (all atoms are at rest) *accuracy - how close a value is to the actual or true value; also see precision *acid - a compound that, when dissolved in water, gives a pH of less than 7.0 or a compound that donates a hydrogen ion *acid anhydride - a compound with two acyl groups bound to a single oxygen atom *acid dissociation constant - an equilibrium constant for the dissociation of a weak acid *actinides - the fifteen chemical elements that are between actinium (89) and lawrencium (103) *activated complex - a structure that forms because of a collision between molecules while new bonds are formed *activation energy - the minimum energy that must be input to a chemical system *activity series *actual yield *addition reaction - within organic chemistry, when two or more molecules combine to make a larger one *aeration - the mixing of air into a liquid or solid *alkali metals - the metals of Group 1 on the periodic table *alkaline earth metals - the metals of Group 2 on the periodic table *allomer - a substance that has different composition than another, but has the same crystalline structure *allotropy - elements that can have different structures (and therefore different forms), such as Carbon (diamonds, graphite, and fullerene) *amplitude - the maximum distance that the particles of the medium carrying the wave move away from their rest position *anion - negatively charge ions *anode - the positive side of a dry cell battery or a cell *aromaticity - chemical property of conjugated rings that results in unusual stability. See also benzene. *atom - a chemical element in its smallest form, and is made up of neutrons and protons within the nucleus and electrons circling the nucleus *atomic mass unit *atomic number - the number representing an element which corresponds with the number of protons within the nucleus *atomic orbital - the region where the electron of the atom may be found *atomic radius *average atomic mass *Avogadro's law *Avogadro's number - is the number of particles in a mole of a substance ( 6.02x10^23 ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Glossary of chemistry terms」の詳細全文を読む スポンサード リンク
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