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© 2014 Pearson Education, Inc. Chapter 5 Lecture Basic Chemistry Fourth Edition Chapter 5 Electronic Structure and Periodic Trends 5.1 Electromagnetic Radiation Learning Goal Compare the wavelength of radiation with its frequency.
© 2014 Pearson Education, Inc. Chapter Readiness Key Math Skills Solving Equations (1.4D) Core Chemistry Skills Using Prefixes (2.5)
© 2014 Pearson Education, Inc. Electromagnetic Radiation We experience electromagnetic radiation when we listen to a radio use a microwave oven see colors in a rainbow have an X-ray taken All types of electromagnetic radiation, including light, consist of particles that move as waves of energy.
© 2014 Pearson Education, Inc. Wavelength and Frequency Waves of electromagnetic radiation are similar to waves you might see at the beach. The highest part of the wave is called a crest, and the lowest point is called a trough. Wave Crest Wave Trough Wavelength, λ (lambda)
© 2014 Pearson Education, Inc. Wavelength and Frequency
© 2014 Pearson Education, Inc. Wavelength and Frequency Frequency (symbol ν, nu) is the number of times the crests of a wave pass a point in one second is measured in hertz (Hz), equal to cycles/second or s −1 All electromagnetic radiation travels at the speed of light (c), 3.00 × 10 8 m/s.
© 2014 Pearson Education, Inc. Wave Equation The wave equation expresses the relationship of the speed of light (m/s) to wavelength (m) and frequency (s −1 ). c = λν Speed of light (c) = 3.00 × 10 8 m/s = wavelength (λ) × frequency (ν) = wavelength (m) × frequency (s −1 )
© 2014 Pearson Education, Inc. Electromagnetic Spectrum The electromagnetic spectrum is an arrangement of different types of radiation from the longest to the shortest wavelength. As the wavelength increases, the frequency decreases. The speed of light (c) is constant.
© 2014 Pearson Education, Inc. Inverse Relationship of λ and ν The inverse relationship of wavelength and frequency means that longer wavelengths have lower frequencies shorter wavelengths have higher frequencies different types of electromagnetic radiation have different wavelengths and frequencies
© 2014 Pearson Education, Inc. Electromagnetic Spectrum The longer wavelengths include radio waves and those from cellular phones, while shorter wavelengths are produced from infrared lights, ultraviolet light, and heat lamps. Visible light ranges from 700 to 400 nm.
© 2014 Pearson Education, Inc. Electromagnetic Spectrum
© 2014 Pearson Education, Inc. Learning Check Short wavelengths of blue are dispersed more by the molecules in the atmosphere than longer wavelengths of visible light, which is why we say the sky is blue. If blue light has a wavelength of 450 nm, is the wavelength of red light greater or less than 450 nm? 400 nm 700 nm
© 2014 Pearson Education, Inc. Solution The wavelength of red light is greater than that of blue light, which means that the wavelength of red light is greater than 450 nm.
© 2014 Pearson Education, Inc. Learning Check If the frequency of blue light is 6.3 × 10 14 Hz, what is its frequency in kilohertz (kHz) and in megahertz (MHz)?
© 2014 Pearson Education, Inc. Solution If the frequency of blue light is 6.3 × 10 14 Hz, what is its frequency in kilohertz (kHz) and in megahertz (MHz)?
12.6 Light and Atomic Spectra
November 18, Electromagnetic Radiation Objectives At the end of class, you will be able to: List the forms of electromagnetic radiation Find wavelength.
Warm Up Write the correct answers for the following: 1) 2.00 x m = __________m 2) 1.23 x m = __________nm.
Chapter 4 Atoms and Elements Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.
Light l The study of light led to the development of the quantum mechanical model. l Light is a kind of electromagnetic radiation. l Electromagnetic radiation.
Chemistry Physics and the Quantum Mechanical Model.
4-1 Radiant Energy. Waves Light travels in Waves similar to ocean waves Light waves are electromagnetic and consist of an electric and magnetic fields.
Section 1 chapter 4. Electromagnetic Radiation (EMR) - a form of energy that travels in waves which includes radio waves, T.V. waves, microwaves, visible.
General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.1 Chapter 3 Atoms and Elements 3.6 Electron Energy Levels.
Physics and the Quantum Mechanical Model
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?
Chapter 5 in your textbook pp Wave Nature of Light In the early 1900s scientists observed that certain elements emitted visible light when.
Chapter 5 - Electronic Structure and Periodic Trends Electromagnetic Radiation Atomic Spectra and Energy Levels Energy Levels, Sublevels, & Orbitals Orbital.
Chapter 4 The Electromagnetic Spectrum Part 1. Demonstration Gas spectral tubes: NeonArgon.
Electromagnetic Radiation Definition: Characteristics of Waves Wavelength (λ): Frequency (v): Amplitude: Draw and Label the parts of a wave: Other relevant.
Lesson: Electcromagnetic Spectrum (EMS)
LIGHT and QUANTIZED ENERGY. Much of our understanding of the electronic structure of atoms has come from studying how substances absorb or emit light.
Physics and the Quantum Mechanical Model. Light consists of waves A wave cycle begins at zero, increases to its highest value (crest), returns to.
The Electromagnetic Spectrum Rainbows plus a whole lot more.
5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 > Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 5.
Light and Energy Chemistry I. Classical description of light Light is an electromagnetic wave. Light consists of elementary particles called photons.
The Nature of Light: Gave important information about the structure of the atom Light behaves like waves rippling from a rock thrown in the water Einstein.
Warm Up 10/21 Where can electrons be found in an atom? What is their electric charge?
The Bohr Model for Nitrogen 1. Bohr Model of H Atoms 2.
Unit 6: Electrons in Atoms part 1: properties of waves.
Waves & Electromagnetic Spectrum
“Physics and the Quantum Mechanical Model” Read pg. 138 p. 1
The Electromagnetic Spectrum. There are seven different types of EM waves: Electromagnetic Waves Radio Waves Microwaves Visible Light Infrared Light Ultraviolet.
Electromagnetic Spectrum. Light Phenomenon Isaac Newton ( ) believed light consisted of particles By 1900 most scientists believed that light.
Models, Waves, and Light Models of the Atom Many different models: – Dalton-billiard ball model (1803) – Thompson – plum-pudding model (1897) – Rutherford.
Section 2: Waves of the Electromagnetic Spectrum Objectives: list and compare different types of electromagnetic waves describe how the electromagnetic.
The Electromagnetic Spectrum
Waves. Wave-Particle Duality The electron was previously describe by J.J. Thompson as a particle. He won a Nobel prize for his research His son, George.
The Electromagnetic Spectrum Contents: The Spectrum Basic Concepts Whiteboards.
The Electromagnetic Spectrum1 Wavelength/frequency/energy.
Wavelength Visible light wavelength Ultraviolet radiation Amplitude Node Chapter 6: Electromagnetic Radiation.
Light Waves and Particle Characteristics. Parts of a Wave = wavelength (lambda) =frequency(nu)
7.6.a Students know visible light is a small band within a very broad electromagnetic spectrum.
Chapter 5 - Electronic Structure and Periodic Trends
Section 5.3 Physics and the Quantum Mechanical Model
Electronic Structure. Wavelength ____________ (λ) - the shortest distance between equal points wave.
Objectives I can calculate wavelength, frequency or energy of light. I can explain the emission spectrum of an element.
Electron Behavior Electron absorb energy and jump to higher energy level (Excited State). Immediately fall back to original level (Ground State) emitting.
Waves….. What is a Wave? A Wave is a disturbance that carries energy through a medium or empty space. A Medium is a substance such as a solid, liquid,
Lecture Outlines Astronomy Today 7th Edition Chaisson/McMillan © 2011 Pearson Education, Inc. Chapter 3.
Frequency and Wavelength
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