We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byClementine Hancock
Modified over 4 years ago
Flame Test and the EMS
Absorption and Emission of Light in a Flame When a substance is heated in a flame, the substances electrons absorb energy from the flame.
Absorption and Emission of Light in a Flame This absorbed energy allows the electrons to be promoted to EXCITED energy levels and the electrons are “kicked up notch” to a higher energy level.
Absorption and Emission of Light in a Flame The electrons naturally want to make a transition, or RELAX, back down to the ground state (lowest energy level).
Absorption and Emission of Light in a Flame When an electron makes a transition from a higher energy level to a lower energy level, a particle of light called a photon is emitted. We are PHOTONS!
Absorption and Emission of Light in a Flame The energy of a photon is equal to the difference in energy between the excited state and the state to which the electron relaxes.
Absorption and Emission of Light in a Flame The energy of the emitted photon determines the color of light observed in the flame (expressed in WAVELENGTHS).
Absorption and Emission of Light in a Flame The color of light varies from substance to substance, depending on the electron configuration.
How is each substance unique? Difference between energy levels Exact energy of the emitted photon Corresponding wavelength and color
EMS The visible portion of the EMS is only a small part of the entire spectrum.
Types of Emissions Radio waves Used for radio and television communication
Types of Emissions Microwaves Used in radar signals and microwave ovens
Types of Emissions Infrared radiation Given off in the form of heat
Types of Emissions Visible Light oSmall portion of the EMS oWavelength region between 400 and 700nm oAs the color of light changes, so does the amount of energy it possess
Types of Emissions Ultra Violet (UV) Given off by the SUN
Types of Emissions X-Rays Used to detect bones and teeth
Types of Emissions Gamma Rays May be given off by radioactive materials
Types of Emissions
The Electromagnetic Spectrum
Chemistry Daily 10’s Week 5.
Niels Bohr in 1913 proposed a quantum model for the hydrogen atom which correctly predicted the frequencies of the lines (colors) in hydrogen’s atomic.
How do you excite an electron?
The Electromagnetic Spectrum. The name given to a group of energy waves that are mostly invisible and can travel through empty space Shorter waves have.
The Electromagnetic Spectrum & Electromagnetic Radiation
Life always offers you a second chance. It’s called tomorrow.
Energy in Our Life. Miroslav Hruška Czech Republic.
Electron Configuration and Energy Levels: Ground state: All the electrons in an atom have the lowest possible energies Most stable electron configuration.
Light and Electronic Transitions. The Big Questions What is light? How is light emitted? What do electrons have to do with light? What are emission spectra?
Emission Spectra and Flame Tests. The Big Questions What is light? How is light emitted? What do electrons have to do with light? What are emission spectra?
Which of the following is an important feature of the Bohr model of the atom? A. Electrons exist anywhere around the nucleus. B. The energy of the light.
Light, Photon Energies, and Atomic Spectra
Electromagnetic Spectrum A) The Waves of the Spectrum 1) EM spectrum: all of the frequencies or wavelengths of electromagnetic radiation 2) The EM spectrum.
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.
The Electromagnetic Spectrum The Electromagnetic Spectrum is an arrangement of radiant energy in order of wavelengths and frequencies. It is simply a.
Energy Unit Learning Goal #1: Evaluate the quantum energy changes in the atom in terms of the energy contained in light emissions.
© 2019 SlidePlayer.com Inc. All rights reserved.