Lesson 15: Duality and the Wave Mechanical Model

Slides:

Advertisements

Similar presentations

Electrons as Waves Sarah Allison Claire.

Advertisements

P2-13: ELECTRON DIFFRACTION P3-51: BALMER SERIES P2-15: WAVE PACKETS – OSCILLATORS P2-12: X-RAY DIFFRACTION MODEL P2-11: INTERFERENCE OF PHOTONS Lecture.

Enter SK / KD / Indicators. Discovered Corpuscles/Electrons in 1897 picture.

Electrons in Atoms The Quantum Model of the Atom.

Quantum Mechanical Theory. Bohr Bohr proposed that the hydrogen atom has only certain _________________. Bohr suggested that the single electron in a.

Atomic Theory Past and Present.

Chapter 29 Particles and Waves.

Modern Atomic Theory.

Quantum Theory the modern atomic model. Bohr Model of the Atom a quantum model proposed by Niels Bohr in 1913 It helped to explain why the atomic emission.

Arrangement of Electrons in Atoms

Bohr vs the quantum mechanical model of the atom

Quantum Mechanical Model

The Quantum Mechanical Model of the Atom. Niels Bohr In 1913 Bohr used what had recently been discovered about energy to propose his planetary model of.

I II III  Suggested Reading Pages  Section 4-2 Quantum Theory.

(8th) Chapter 4-1 Cornell Notes “Introduction to Atoms”

Principles of Quantum Mechanics P1) Energy is quantized The photoelectric effect Energy quanta E = h  where h = J-s.

Louis de Broglie, (France, ) Wave Properties of Matter (1923) -Since light waves have a particle behavior (as shown by Einstein in the Photoelectric.

The Atomic Theory – p Democritus  Democritus, 440 B.C.  Thought matter was made of tiny particles  Believed these particles could not be cut.

Atomic Models This model of the atom may look familiar to you. This is the Bohr model. In this model, the nucleus is orbited by electrons, which are in.

Electron Configuration

Postulates of Bohr model

UNIT 1: Structure and properties wave mechanical model

Topic: Atomic Models PSSA: A/S8.C.1.1.

Quantum Model of the Atom

Section 4.2 “The Quantum Model of the Atom”

Physical Science Mr. Willis

Chapter 5 section 1 models of the atom.

The Quantum Model Section 4.2.

Postulates of Bohr model

the quantum model of the atom

Topic: Atomic Structure Aim: How has the atomic model changed over time? Do Now: How would you define “atom”? HW:

Ch. 4.2 Quantum Model of the Atom

Bohr Model vs. Quantum Theory

Discovering the Atom.

Fun with xrays Make your own at home! Sharp x-ray lines from atoms Science Friday with Nick Veasy

Quantum Model of the Atom

Quantum Model of the Atom

III. Quantum Model of the Atom (p )

The Quantum Mechanical Model

Fun with xrays Make your own at home! Sharp x-ray lines from atoms Science Friday with Nick Veasy

Quantum Theory and the Atom

Atoms Atomic Structure.

Science Section 1: The Atom

The Quantum Model of the Atom

Unit 3 – Electron Configurations Part C: Quantum Mechanical Model

Wave-Particle Duality

Modern Quantum Model of Atoms 2.7

Introduction to Atoms – Chapter 11

Atom Model History - Democritus a fifth century B.C. Greek philosopher proposed that all matter was composed of indivisible particles called atoms (Greek.

Chapter 4 Electrons as Waves

Modern Model of the Atom

Modern Theory of the Atom: Quantum Mechanical Model

Modern Quantum Model of Atoms 2.7

The Quantum Model of the Atom

Orbitals, Spins, and More

Bohr’s model failed For atoms other than Hydrogen Bohr’s theory failed and Bohr new this himself as in physics: A charged body (ie. an electron) following.

Section 5.2 Quantum Theory and the Atom

Lesson 12: Bohr to Heisenberg

Schrödinger's/ Modern model of the atom

QUANTUM MECHANICS VIEW OF THE ATOM.

Modern Quantum Model of Atoms 2.7

Chapter 4:Arrangement of Electrons in atoms

Niels Bohr Based his studies on Hydrogen Proposed energy levels

Unit 4: Electrons in the Atom

The Atomic Theory.

Schrödinger's/ Modern model of the atom

Quantum Theory and the Atom

Continuing the Atomic Theory

Bohr vs the quantum mechanical model of the atom

Presentation transcript:

Lesson 15: Duality and the Wave Mechanical Model

Review Thomson discovers that el- are – particles in atoms So we can NOT say where an el- actually is This is Heisenberg’s Uncertainty Principle We can only state the probability of finding an el- in a given region of space around the nucleus---this space is called an ORBITAL

El- are weird! El- are - particles in the atom El- also seem to act as waves Double Slit expmt

Waves create an interference pattern.

Particles do NOT create interference.

El- create an interference pattern, so sometimes el- do act like waves.

Duality Theory De Broglie El- seem to act as WAVES or PARTICLES Maybe all MATTER can act as a wave or a particle.

Modern Wave-Mechanical Model Atoms have a positive nucleus with protons and neutrons inside, and the nucleus is surrounded by vibrating el- clouds El- can be thought of as waves or particles El- do not follow rules of classic physics El- occupy certain high prob. areas of the nucleus called orbitals