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
Atoms, Molecules, and Ions Atoms,Molecules,andIonsAtom:Thebasicstructuralunitofanelementistheatom,whichisthesmallestunitofanelementthatretainsthechemicalpropertiesofthatelement.JohnDalton’sAtomicTheory:-Anelementiscomposedofextremelysmall,invisibleparticlescalledatoms.-Allatomsofagivenelementhaveidenticalproperties...
This chapter presents the introduction of atoms, molecules, ions, and their weight relationships. It explains the behavior of the atoms. The chapter discusses the symbols used for atoms, how formulas are determined, and solutions and their concentrations. It explains three laws describing the ...
These indicate which of the elements make up a substance. These also indicate the number of ions or atoms that make up a given. Chapter 2 & 3: The Atomic Theory of Matter and Numerical connections: Unit 5A Chapter 10: Chemical Quantities Mole-Mass Relationships ABClark-Grubb. RR...
Atoms chemically bond together to formmolecules, and the composition of a molecule is given by its chemical formula (O 2, H 2O, C 6H 12O 6). When the atoms in a molecule are different, the molecule is a compound (H 2O and C 6H 12O 6, but not O 2). The atoms of the ...
-contain both + and - ions (anions and cations)-arranged in 3D structures (lattices) Binary Covalent Compounds (also called molecular compounds)-nonmetal + nonmetal-consist of discrete molecules Empirical Formula the simplest chemical formula for a compound. It tells us which elements are present ...
Chapter 2 Atoms, Molecules, and Ions I. Chemistry History Early chemistry Greek chemistry (~ 400 BC) Matter consists of four elements: fire, earth, air, water Atoms as indivisible particles proposed by Demokritos Didn’t test their ideas with experiments Alchemy (300 BC to 1500 AD) Pseudoscien...
This chapter presents the introduction of atoms, molecules, ions, and their weight relationships. It explains the behavior of the atoms. The chapter discusses the symbols used for atoms, how formulas are determined, and solutions and their concentrations. It explains three laws describing the behavio...
The masses of atoms, molecules and ions T: Ok, let’s begin our class. In our daily life, we can weight our body, the basketball. Now I have one thing. The atom, can you weight it? Do you have some ideas? S: No. T: Because it’s too small, you can’t use scales to ...
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 ...