3 CHEMISTRY-RELATIVE ATOMIC MASS the mass of a hydrogen atom 1/1H is equal to 1/12 of the mass of a carbon-12 atom, so its relative isotopic mass is 1.A magnesium atom 24/12Mg is twice as heavy as a carbon-12 atom,so its relative isotopic mass is 24 再给另一个例子 不要用英文...
这就是说的相对分子质量的事 肯定能翻译过来吧 基本意思就是说 一个氢原子的的质量是碳12原子质量的12分之一，所以氢的相对原子质量为1 镁原子的质量是碳原子质量的2倍，所以镁原子的相对原子质量是24.可能你不知道这个东西：国际规定把一个碳-12原子的质量分为12等份，（碳原子有好几种，其中有...
relative atomic mass - (chemistry) the mass of an atom of a chemical element expressed in atomic mass units atomic mass, atomic weight mass - the property of a body that causes it to have weight in a gravitational field combining weight, eq, equivalent weight, equivalent - the atomic weight...
the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12. Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005 relative atomic mass[′rel·əd·iv ə′täm·ik ′mas] (chemistry) ...
(also atomic mass, atomic weight) (chemistry)the average Mass of all the naturally occurring atoms of a chemical element Want to learn more? Find out which words work together and produce more natural-sounding English with the Oxford Collocations Dictionary app. Try it for free as part of ...
不過,負責訂定化學專有名詞及量度標準事宜的國際純粹與應用化學聯合會(International Union of Pure and Applied Chemistry,IUPAC)已決定在新的元素週期表上,以一組數值範圍表示以上十個元素的原子質量。 chem.jingkung.com [...] organizations active on teachers’ issues, including issues of: relative, thoug...
SpecialEnglishforChemistry(SEC)主讲 孙强强 Chapter1 TheChemicalElementsandTheirRelativeAtomicMasses Keywordschemicalelement化学元素relativeatomicmass相对原子质量atomicweight原子量invariant不变量radioactiveelement放射性元素isotope同位素half-time半衰期uncertainty未确定值source来源IUPAC（InternationalUnionofPureandApplied...
relative molecular mass- (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule molecular weight mass- the property of a body that causes it to have weight in a gravitational field chemical science,chemistry- the science of matter; the branch of the natural ...
BBC Bitesize: Atomic Number, Mass Number and Isotopes A Level Chemistry: Relative Atomic Mass, Relative Molecular Mass and Mass SpectrometryCite This Article MLA Johnson, Lee. "How To Find Relative Mass" sciencing.com, https://www.sciencing.com/how-to-find-relative-mass-13710549/. 19 March 20...
This resource contains 4 worksheets that can be used in class or as homework to enable your students to practice what they have learnt in the classroom. This pack includes: Relative Atomic Mass (x2) Electronic Structure (x2) We have worksheets for the following topics in Chemistry Paper...