Atomic Theory and the Atomic Model. Objectives Describe evidence that Greek philosophers used to develop the idea of atoms. Distinguish between a scientific. (greek for indivisible) Chapter 4 Atomic Structure From Dalton to Modern Atomic Theory Unit V: The Mole Concept Bell-Ringer How have your i...
Democritus proposed that all matter is composed of fundamental, indivisible particles that he called atoms. The essential ideas behind his theory are the following: 1. Everything is composed of “atoms,” which are physically indivisible. 2. Atoms are indestructible and constantly in motion. 3. T...
Dalton’sModel LawofMultipleProportions 8 LawofConservationofMass 16X + 8Y 8X2Y 9 ModernAtomicTheory •“Atomscannotbesubdivided,created,ordestroyed.”–Atomscanbedestroyedvianuclearreactionsbutnotbychemicalreactions.•“Atomsofagivenelementareidentical*insize,mass,andotherproperties;”–Therearedifferent...
Law of conservation of mass Law of constant composition Dolton’s Atomic Theory Law of multiple proportions Atomic Mass Unit The Structure of Atoms What is an atom made of ? Millikan’s Oil-Drop Experiment: Mass of Electron X-Ray and Radioactivity Rutherford’s Scattering Experiment The Nuclear ...
ATOMEVOLUTIONOFTHEATOMICMODELFamousDeadGuy=JohnDaltonTimePeriod=1800sExperiment=Wantedtoexplainhowandwhyelementscombinetogetherinfixedratios,sohedevelopedatheoryResults=Theorystates:Eachelementhasitsownatomswhichcanrearrange/recombinewithotheratomsinchemicalreactions.Ideaoftheatom=SOLIDSPHEREEVOLUTIONOFTHEATOMICMODEL...
Rutherford’s Atomic Theory • Rutherford’s model concluded that all of an atom’s positive charge is concentrated in its nucleus. • He used the gold foil experiment to determine the behavior of the alpha particles when they struck different locations in the gold foil. He originally ...
14、on Chadwick 1932 - nuclear bombardment No charge n0 Actual Mass: 1.67 x 10-24g Relative Mass: 1Niels Bohr1885-1962 Planetary Model 1913 Nucleus surrounded by orbiting electrons at different energy levels Electrons have definite orbits Utilized Plancks Quantum Energy theory Worked on the Manhatta...
AtomicStructure 4.1 Defining AtomDemocritus, Dalton atomic theories 4.2 Structure NuclearAtom proton, neutron, electron, plum pudding model, Rutherford atomic model 4.3 Distinguishing Among Atoms atomic number, mass number, isotopes, isotopic notation, atomic mass, introduction periodictable 4.1 Defining ...
Rutherford's-Atomic-Model Rutherford’sAtomicStructureModel Calvin,Wendy,Shaun Outline 1.WhatpeoplebelievedbeforeRutherford2.Rutherfordmodel3.Rutherford’smodelisamilestone Before Dalton’sAtomicTheory Elementsaremadeofextremelysmallparticlescalledatoms.（JohnDalton1766~1844)Atom-model：Solidsphere,indivisible Electr...
1.2 atomic structure_化学_自然科学_专业资料。grade 11 chemistry atomic structure 1.2 ATOMIC STRUCTURE THE DEVELOPMENT OF THE ATOMIC THEORY Dalton’s ... 无机化学(2)Atomic Structure (Part 1) 无机化学(2)Atomic Structure (Part 1)_经济学_高等教育_教育专区。2014-9-3 Introduction to Inorganic Chem...