Describes atomic emission spectra and the source of the emission lines.
Atomic emission spectra are used to identify what elements are present in a gas or plasma that is emitting energy as light. Typically researchers use this method to analyze the composition of far away stars. Here on earth we can perform the experiment on a small scale by trapping gas and exciting it with electricity. This causes the electrons in the gas to become excited to higher orbitals as they absorb the energy and release light as the electrons relax. Drag each gas bulb into the red circle to excite them and see their emission spectrum.
A neat website where you can see the atomic emission spectrum of different elements. NOTE: While each element does have it's own unique emission spectrum, this website does not have the emission spectrum of every element on the periodic table.
Reviews atomic emission spectra and the source of the emission lines.
To predict the main ideas of the text based on context clues, to generate questions about a given topic and to organize and review the knowledge learned about the topic using the SQ3R strategy.
To stimulate the critical thinking skills required to assess the validity of statements about the key concept using an Agree/Disagree Table.
Learn how sunlight can be analyzed to determine the Sun's chemical composition.
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