Spectroscopy

Explore why excited atoms emit different wavelengths of radiation and learn how to identify atoms based on their unique atomic spectra.

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Requirements

On OS X 10.9 or newer, you will need to install a launcher application to run this Java activity. If you have not already installed it, please:

  • Download the launcher installer
  • Open the downloaded .dmg file and drag the CCLauncher application to your Applications folder
  • Return to this page and launch the resource

What happens when an excited atom emits a photon? What can we deduce about that atom based on the photons it can emit? A series of interactive models allows you to examine how the energy levels the electrons of an atom occupy affect the types of photons that can be emitted. Use a digital spectrometer to record which wavelengths certain atoms will emit, and then use this knowledge to compare and identify types of atoms.

» Teacher Guide

Students will be abe to:

  • Determine that the frequency of a photon is determined by the difference of energy levels between the states of an excited electron
  • Add energy and excite atoms
  • Analyze photon emissions and identify atoms that emit them
  • Determine that atoms can absorb photons of specific frequencies
  • Explore emissions spectra, and identify atoms by their spectrum
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Download Size: 5 MB

WARNING: Your data will not be saved. To save data, run this activity as a registered user. You can register at the project portal. Please view the requirements below before launching this activity.

AAAS Benchmark Alignments (2008)

4. The Physical Setting

4D. The Structure of Matter
  • 4D/M10** (NSES). By the end of the 8th grade, students should know that a substance has characteristic properties such as density, a boiling point, and solubility, all of which are independent of the amount of the substance and can be used to identify it.
4E. Energy Transformations
  • 4E/H5*. By the end of the 12th grade, students should know that when energy of an isolated atom or molecule changes, it does so in a definite jump from one value to another, with no possible values in between. The change in energy occurs when light is absorbed or emitted, so the light also has distinct energy values. The light emitted or absorbed by separate atoms or molecules (as in a gas) can be used to identify what the substance is.

11. Common Themes

11B. Models
  • 11B/M1*. By the end of the 8th grade, students should know that models are often used to think about processes that happen too slowly, too quickly, or on too small a scale to observe directly. They are also used for processes that are too vast, too complex, or too dangerous to study.
  • 11B/M2. By the end of the 8th grade, students should know that mathematical models can be displayed on a computer and then modified to see what happens.
  • 11B/H1a*. By the end of the 12th grade, students should know that a mathematical model uses rules and relationships to describe and predict objects and events in the real world.
11D. Scale
  • 11D/M3**. By the end of the 8th grade, students should know that natural phenomena often involve sizes, durations, and speeds that are extremely small or extremely large. These phenomena may be difficult to appreciate because they involve magnitudes far outside human experience.

Copyright
© Copyright The Concord Consortium

Record Link
<a href="">The Concord Consortium. Spectroscopy. Concord: The Concord Consortium, 2010, September 23.</a>

AIP
Spectroscopy (The Concord Consortium, Concord, 2010, September 23), WWW Document, (https://concord.org/).

AJP
Spectroscopy (The Concord Consortium, Concord, 2010, September 23), WWW Document, (https://concord.org/).

APA
Spectroscopy. (2010, September 23). Retrieved 2017, June 25, from The Concord Consortium: https://concord.org/

Disclaimer: The Concord Consortium offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure.

Requirements

This activity requires the Java Runtime Environment version 5 (sometimes referred to as 1.5) or later with Java Webstart. You can download it at java.com.

On OS X 10.9 or newer, you will need to install a launcher application to run this Java activity. If you have not already installed it, please:

  • Download the launcher installer
  • Open the downloaded .dmg file and drag the CCLauncher application to your Applications folder
  • Return to this page and launch the resource

The download for this activity will require 5 MB of disk space.

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Science of Atoms and MoleculesThis resource is a part of the Concord Consortium's Science of Atoms and Molecules project.

Grade Level
High School, Higher Education
Subject
Physics
Focus Area
Modeling and Simulation
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0
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