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Learning Intentions

• You can discuss the article you read to learn other ways that electrons can be excited and express your own ideas about facts from an article on electron excitation. 

• You can describe how the light emitted from excited electrons is used to explore electronic structure of an atom.

• You can observe demonstrations from the article and explain what is happening during the demonstration.

• You can brainstorm real world applications of electron excitation.

• You can plan an experiment to discover what will happen to various chemical in a flame test and predict the color of light that will be emitted by the chemicals.

Content Standards being covered:

Student understand the quantum mechanical atomic model that describes the structure of an atom and changes that can occur to that structure.
62. Max Planck developed the idea of “quanta” - a discrete unit of Energy related to frequency
68. Elements, when excited with enough energy, will emit their own atomic emission spectrum, a unique set of frequencies on the electromagnetic spectrum due to the transition of electrons from a higher to a lower energy state
69. The electromagnetic spectrum is the broad range of frequencies emitted through electromagnetic radiation
70. Electromagnetic radiation moves through space in waves
71. One complete wavelength is measured from crest to crest or trough to trough, is symbolized by the Greek symbol lambda λ, and is measured in meters (m)
72. The frequency of a wave is how many complete wave occur per second, is symbolized by ѵ, and is measured in Hertz (Hz= 1/seconds= seconds-1)
73. The speed of light, c, is equal to 3.0 X 10⁸ m/s
74. As wavelength (λ) increases, the frequency (ѵ) of the wave decreases and therefore relate to one another using the equation c= λѵ
75. The frequency of the visible light spectrum increases from ROYGBI to V (red, orange, yellow, green, blue, indigo, and violet)
76. The photoelectric effect is when metals emit electrons (called photoelectrons) when light shines on them
77. The frequency of the electron can be related to the Energy of it using the equation E=hѵ (where h= Planck’s Constant= 6.626 x 10^¯34 J s)

Habits of Mind/Life skills being covered:

Asking Questions and Posing Problems
Responding with Wonderment and Awe

Journal Entry:

 What questions do you have from the textbook assignment? What was your favorite thing you learned from the article?