Chapter 2: Atoms, Molecules and IonsChemProf. J.T. Spencer
atoms是原子：原子是化学变化中的最小粒子。即便物质发生了化学变化，原子也不变。ions是离子：指原子得到电子或者失去电子后，形成的微粒。molecules是指分子：分子是保持物质化学性质的最小粒子
Ions are atoms or molecules with net positive (cation) or negative (anion) charges. Ions of opposite charge have an electrostatic attraction that creates an ionic compound. The ions combine in a simple positive integer ratio that is uncharged. The result is an empirical formula (formula unit)...
SOME experiments dealing with collisions of the second kind between ions and atoms or molecules have been performed independently and simultaneously in two different laboratories-one at Princeton University and one at the University of California. Through correspondence the different investigators have ...
It explains three laws describing the behavior of matter that were known before the acceptance of atomic theory. The chapter further explains how atomic theory applies to those laws. Atoms are found joined together in independent particles called "molecules," as ions formed by the gain or loss ...
This review deals with the measurement of lifetimes of atoms and molecules in the gas phase, in the range 10 to the negative 10th to 10 to the negative 5th sec, and concentrates on the more accurate and promising techniques, which are grouped together according to whether their most prominent...
Dalton's Atomic Theory (1808)The atoms of a given element are ___ Identical; the atoms of different elements are different is some fundamental way or ways Dalton's Atomic Theory (1808)Chemical compounds chemical compounds are formed when atoms of different elements combine with each other. A ...
aTo the world you may be one person, but to me you are the world! 对世界您也许是一个人,但对我您是世界! [translate] a科研院 Scientific research institute [translate] aheavy ions to collide with background atoms and molecules to produce active species with minimal heating. 碰撞的重的离子...
Ionic bonds form between two atoms when one or more electrons are completely transferred from one atom to the other. The atom that gains electrons has an overall negative charge, and the atom that donates electrons has an overall positive charge. Because of their positive or negative charge, th...
Solid by a large number of atoms (or ions, molecules) are composed of solid material. Solids, the volume of 1cm3 each, about 1022 ~ 1023 atoms. 翻译结果4复制译文编辑译文朗读译文返回顶部 Solid by a large number of atoms and molecules (or ions) are composed of solid material, the volume...