Physics and the Quantum Mechanical Model

Slides:



Advertisements
Similar presentations
Unit 3 Light, Electrons & The Periodic Table.
Advertisements

Physics and the Quantum Mechanical Model
Chemistry.
5.3 Atomic Emission Spectra
The Electromagnetic Spectrum & Electromagnetic Radiation
Physics and the Quantum Model
Quantum Mechanics.  Write what’s in white on the back of the Week 10 Concept Review  Then, answer the questions on the front Your Job.
What gives gas-filled lights their colors?
12.6 Light and Atomic Spectra
Many scientists found Rutherford’s Model to be incomplete  He did not explain how the electrons are arranged  He did not explain how the electrons were.
Electron Behavior Electron absorb energy and jump to higher energy level (Excited State). Immediately fall back to original level (Ground State) emitting.
Physics and the Quantum Mechanical Model
Electronic Configurations of Atoms
Bellwork What is the majority of the volume of an atom?
Chemistry 5.3 Introduction.
Slide 1 of 38 chemistry. © Copyright Pearson Prentice Hall Slide 2 of 38 Physics and the Quantum Mechanical Model Neon advertising signs are formed from.
Section 5.3.  Neon advertising signs are formed from glass tubes bent in various shapes. An electric current passing through the gas in each glass tube.
5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 > Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 5.
Slide 1 of 38 chemistry. Slide 2 of 38 © Copyright Pearson Prentice Hall Physics and the Quantum Mechanical Model > Light The amplitude of a wave is the.
5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 > Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 5.
Drill Determine the electron configuration of the following: Determine the electron configuration of the following: H He He.
Physics and the Quantum Mechanical Model.  Light consists of waves  A wave cycle begins at zero, increases to its highest value (crest), returns to.
Chapter 5 “Electrons in Atoms”. Section 5.3 Physics and the Quantum Mechanical Model l OBJECTIVES: Describe the relationship between the wavelength and.
Do Now: 1.If you could solve one problem using science, what would it be? 2.What branch of science do you think you would need to use to solve the problem?
Models, Waves, and Light Models of the Atom Many different models: – Dalton-billiard ball model (1803) – Thompson – plum-pudding model (1897) – Rutherford.
Chemistry Physics and the Quantum Mechanical Model.
5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 > Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 5.
5.3 Physics and the Quantum Mechanical Model. Light By 1900 enough experimental evidence to convince scientists that light consists of waves.
Slide 1 of 38 chemistry. © Copyright Pearson Prentice Hall Slide 2 of 38 Physics and the Quantum Mechanical Model Neon advertising signs are formed from.
5.3 physics and quantum mechanics. Vocabulary lets talk the talk as we walk the walk, and meet the people in this neighborhood the height of the wave.
Physics and the Quantum
Chapter 5 Electrons In Atoms 5.3 Atomic Emission Spectra
Chapter 5 Electrons In Atoms 5.3 Atomic Emission Spectra
Electromagnetic Spectrum
Light, Electromagnetic Spectrum, & Atomic Spectra
Chemistry.
5.3 Atomic Emission Spectra
Chapter 5.3 Light, Wavelength and the Atomic Spectrum
WAVES AND THE ELECTROMAGNETIC SPECTRUM
Light and the Atomic Spectra
What gives gas-filled lights their colors?
Chapter 5 Electrons In Atoms 5.3 Atomic Emission Spectra
Physics and the Quantum Mechanical Model
Chapter 5 Notes Electrons.
Electrons in Atoms Chapter 5: Today we will learn:
Physics and the Quantum Mechanical Model
5.3 Physics and the Quantum Mechanical Model
Electrons and Light Chapter 13.3.
Chapter 5 Electrons In Atoms 5.3 Atomic Emission Spectra
Please write an electron configuration for Br-
Have you ever wondered how you get different colored fireworks?
Physics and the Quantum Mechanical Model
Waves and Electromagnetic Radiation
Electrons in Atoms Chapter 5.
Section 5.3 Physics and the Quantum Mechanical Model
Light, Photon Energies, and Atomic Spectra
Light and electrons.
Light and the Quantum Mechanical Model
5.3 Physics and the Quantum Mechanical Model
Electromagnetic Radiation
Arrangement of Electrons in Atoms
2.3 Light Objectives 3 and 5:b
5.1 – ELECTRONS IN ATOMS.
Quantum Mechanics.
What gives gas-filled lights their colors?
Chemistry Unit 3 Chapter 4 and 5 – Atomic Structure
Chapter 5 Electronic Structure and Periodic Trends
5.3 Physics and the Quantum Mechanical Model
Light and EM Spectrum Light is all thanks to electrons…well… photons…but whatever. What do you REALLY know about light?
2 Light & Electromagnetic Spectrum
Presentation transcript:

Physics and the Quantum Mechanical Model

Light (Waves) Amplitude – The waves height from zero to the crest Wavelength (λ) – The distance between two crests. Frequency (ν) – The number of waves that pass a given point per unit time. Usually expressed in Hertz (Hz), cycles per second (s-1).

Light Waves (Continued) The product of frequency and wavelength always equals a constant (c), the speed of light (2.998 x 108 m/s ) What type of relationship does wavelength and frequency have? (hint: linear, inverse, or quadratic) Inverse. If we rearrange the formula to solve for wavelength, we get the following equation: λ = c / ν What happens to wavelength as frequency increases? Wavelength decreases

Sample Problem What is the wavelength of radiation with a frequency of 1.50 X 1013 Hz? Does this radiation have a longer or shorter wavelength than red light? (Red light λ = 10-6) λ = c / ν λ = 2.998 X 108 m/s / 1.50 X 1013 Hz λ = 2.0 X 10-5 m The radiation has a longer wavelength than red light.

Light Waves (Continued) Light consists of electromagnetic waves Names a few types of electromagnetic radiation: Radio waves, microwaves, infrared waves, visible light, ultraviolet waves. X-rays, and gamma rays. All electromagnetic waves travel in a vacuum at a speed of 2.998 X 108 m/s  speed of light

Light Waves (Continued) What happens when sunlight passes through a prism? Different frequencies separate into a spectrum of colors. (Atomic emission spectrum) Name a natural phenomenon where light get separated into its constituent spectrum of colors. A rainbow

Atomic Spectra Passing an electric current through a gas in a neon tube energizes the electrons of the atoms of gas, and causes them to emit light. When atoms absorb energy, electrons move to higher energy levels, and these electrons lose energy by emitting light when they return to lower energy levels.

Atomic Spectra Explanation Ground state - The lowest possible energy level of an electron. Here the principal quantum number (n) is 1. Excitation of an electron raises it from the ground state to an excited state (n) = 2,3,4,5,etc… The light emitted by the electron moving from a higher to a lower energy level has a frequency directly proportional to the energy of the electron

Quantum Mechanics Describes the motions of subatomic particles and atoms as waves. Light quanta – Photon Heisenberg uncertainty principal – It is impossible to know exactly both the velocity and the position of a particle at the same time.