Download SPECTROSCOPY PowerPoint Presentation

Login   OR  Register

Share page


Home / Education & Training / Education & Training Presentations / SPECTROSCOPY PowerPoint Presentation

SPECTROSCOPY PowerPoint Presentation

Note : SPECTROSCOPY PPT Presentation is available for free download. Click on Download Free PowerPoint Presentation top red button for free download SPECTROSCOPY presentation in .ppt/pptx format.
happyindia By : happyindia

On : May 21, 2016

In : Education & Training

Embed :

Login / Signup - with account for

  • → Make favorite
  • → Flag as inappropriate
  • → Download Presentation
  • → Share Presentation

Presentation Transcript

  • Slide 1 - SPECTROSCOPY
  • Slide 2 - 4.1 Spectral Lines 4.2 Atoms and Radiation The Hydrogen Atom 4.3 The Formation of Spectral Lines The Photoelectric Effect 4.4 Molecules 4.5 Spectral-Line Analysis Information from Spectral Lines Units of Chapter 4
  • Slide 3 - Spectroscope: Splits light into component colors 4.1 Spectral Lines
  • Slide 4 - Emission lines: Single frequencies emitted by particular atoms 4.1 Spectral Lines
  • Slide 5 - Emission spectrum can be used to identify elements 4.1 Spectral Lines
  • Slide 6 - Absorption spectrum: If a continuous spectrum passes through a cool gas, atoms of the gas will absorb the same frequencies they emit 4.1 Spectral Lines
  • Slide 7 - An absorption spectrum can also be used to identify elements. These are the emission and absorption spectra of sodium: 4.1 Spectral Lines
  • Slide 8 - Kirchhoff’s Laws: Luminous solid, liquid, or dense gas produces continuous spectrum Low-density hot gas produces emission spectrum Continuous spectrum incident on cool, thin gas produces absorption spectrum 4.1 Spectral Lines
  • Slide 9 - Kirchhoff’s laws illustrated: 4.1 Spectral Lines
  • Slide 10 - Existence of spectral lines required new model of atom, so that only certain amounts of energy could be emitted or absorbed Bohr model had certain allowed orbits for electron 4.2 Atoms and Radiation
  • Slide 11 - Emission energies correspond to energy differences between allowed levels Modern model has electron “cloud” rather than orbit 4.2 Atoms and Radiation
  • Slide 12 - Energy levels of the hydrogen atom, showing two series of emission lines: 4.2 Atoms and Radiation The energies of the electrons in each orbit are given by: The emission lines correspond to the energy differences
  • Slide 13 - The photoelectric effect: When light shines on metal, electrons can be emitted Frequency must be higher than minimum, characteristic of material Increased frequency—more energetic electrons Increased intensity—more electrons, same energy 4.2 Atoms and Radiation
  • Slide 14 - Photoelectric effect can only be understood if light behaves like particles 4.2 Atoms and Radiation
  • Slide 15 - Light particles each have energy E: Here, h is Planck’s constant: 4.2 Atoms and Radiation
  • Slide 16 - Absorption can boost an electron to the second (or higher) excited state Two ways to decay: To ground state Cascade one orbital at a time 4.3 The Formation of Spectral Lines
  • Slide 17 - (a) Direct decay (b) Cascade 4.3 The Formation of Spectral Lines
  • Slide 18 - Absorption spectrum: Created when atoms absorb photons of right energy for excitation 4.3 The Formation of Spectral Lines Multielectron atoms: Much more complicated spectra, many more possible states Ionization changes energy levels
  • Slide 19 - Emission lines can be used to identify atoms 4.3 The Formation of Spectral Lines
  • Slide 20 - Molecules can vibrate and rotate, besides having energy levels Electron transitions produce visible and ultraviolet lines Vibrational transitions produce infrared lines Rotational transitions produce radio-wave lines 4.4 Molecules
  • Slide 21 - Molecular spectra are much more complex than atomic spectra, even for hydrogen: (a) Molecular hydrogen (b) Atomic hydrogen 4.4 Molecules
  • Slide 22 - Information that can be gleaned from spectral lines: Chemical composition Temperature Radial velocity 4.5 Spectral-Line Analysis
  • Slide 23 - Line broadening can be due to a variety of causes 4.5 Spectral-Line Analysis
  • Slide 24 - 4.5 Spectral-Line Analysis
  • Slide 25 - 4.5 Spectral-Line Analysis The Doppler shift may cause thermal broadening of spectral lines
  • Slide 26 - 4.5 Spectral-Line Analysis Rotation will also cause broadening of spectral lines through the Doppler effect
  • Slide 27 - Spectroscope splits light beam into component frequencies Continuous spectrum is emitted by solid, liquid, and dense gas Hot gas has characteristic emission spectrum Continuous spectrum incident on cool, thin gas gives characteristic absorption spectrum Summary of Chapter 4
  • Slide 28 - Spectra can be explained using atomic models, with electrons occupying specific orbitals Emission and absorption lines result from transitions between orbitals Molecules can also emit and absorb radiation when making transitions between vibrational or rotational states Summary of Chapter 4 (cont.)
  • Slide 29 - THANK YOU
Blue Abstract Free PowerPoint Template

Blue Abstract

Views : 674

Airplane Free PowerPoint Template


Views : 364

Construction Workers Free PowerPoint Template

Construction Workers

Views : 523

Morning Running Free PowerPoint Template

Morning Running

Views : 691

Laboratory Free PowerPoint Template


Views : 687

Yoga Meditation Free PowerPoint Template

Yoga Meditation

Views : 713

Social Media Free PowerPoint Template

Social Media

Views : 414

Cycling Free PowerPoint Template


Views : 349

Woman Meditation Free PowerPoint Template

Woman Meditation

Views : 456

Virtual Identity Free PowerPoint Template

Virtual Identity

Views : 391

Question Mark Free PowerPoint Template

Question Mark

Views : 468

Koli Bacteria Free PowerPoint Template

Koli Bacteria

Views : 1246

Time Management Free PowerPoint Template

Time Management

Views : 432

Massage SPA Free PowerPoint Template

Massage SPA

Views : 592

Biology Free PowerPoint Template


Views : 436

Baby Feet Free PowerPoint Template

Baby Feet

Views : 541

Diet Free PowerPoint Template


Views : 417

Unity Free PowerPoint Template


Views : 447

Smoking Free PowerPoint Template


Views : 419

Roe Deer Free PowerPoint Template

Roe Deer

Views : 231

Description : SPECTROSCOPY ppt presentation a brief description about science topic SPECTROSCOPY.

Tags : Spectroscopy | | Solar System Exploration | types of spectroscopy | spectroscopy lab

Shortcode : Get Shareable link