解析 首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose(注意啦!在定语从句表示从属关系的时候,关系词whose不仅仅适用于人,也可以适用于物) ...
The meaning of ATOM is the smallest particle of an element that can exist either alone or in combination. How to use atom in a sentence. Did you know?
1 Copyright©2004PearsonEducationInc.,publishingasBenjaminCummings.AtomicTheory Matteriscomposedoftinyparticlescalledatoms.Atomsineachelementaresimilaranddifferentfromatomsofotherelements.Atomsoftwoormoredifferentelementscombineinsimpleratiostoformcompounds.Achemicalreactioninvolveschangesinthearrangementsofatoms.2 Copyrig...
百度试题 结果1 题目An element is a substance all of _ atoms have the same atomic number. () A. that B. whose C. what D. which相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目 Isotopes are atoms of an element that contain the same number of protons but different numbers of neutrons. 相关知识点: 试题来源: 解析 正确 反馈 收藏
(460-370 BC) first suggested the material world when broken down to the extreme would consist of indivisible particles called atomos, meaning indivisible. Alchemists through the middle ages physically experimented with matter aiming to create gold from base metals and an elixir for everlasting life....
For example, an atom of lithium, atomic number 3, contains three protons and three electrons. 如,锂原子的序数为3,包含3个质子和3个电子。 Figure 4.15 In the periodic table, each element is represented by its chemical name, atomic number, chemical symbol, and average atomic mass.在元素周期表...
Hydrideion(H-)Alphaparticle(Henucleus)HeliumatomHydrogenion(H+)MassNumber (copythisslide) Thetotalnumberofprotonsandneutronsinthenucleusiscalledthemassnumber.Numberofneutrons=atomicmass–atomicnumber Isotopes (copythisslide)Isotopesareatomsofanelementthatdifferbythenumberof...
O Oxygen Periodic Table 8 16 Atomic Number: Number of protons and it is also the number of electrons in an atom of an element. 8 O Element’s Symbol: An abbreviation for the element. Oxygen Elements Name Atomic Mass/Weight: Number of protons + neutrons. 16 2/16/2019 Dr Seemal Jelani...
How do you calculate the number of atoms of an element if you know the mass of the sample?Avogadro's Number:Avogadro's number is {eq}\rm 6.022 \times 10^{23} {/eq} and represents how many particles of interest are in one mole of a substance. The nu...