Worksheet 1.pdf - Chemistry Form WS2.2.3A Name ATOMS Date Period Understanding the Bohr Model When atoms absorb energy the electrons speed up and move

Worksheet 1.pdf - Chemistry Form WS2.2.3A Name ATOMS Date...

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Chemistry : Form WS2.2.3A Name ______________________________ ATOMS Date _________________ Period _____ Understanding the Bohr Model When atoms absorb energy, the electrons speed up and move further away from the nucleus. Eventually they lose this extra energy as light. Neils Bohr had a perplexing problem. He noticed that the light given off by the electrons of excited atoms never produced a full spectrum. Instead, the light consisted of bright lines of various frequencies with none of the in-between frequencies represented. He also had a complex equation into which he could substitute simple numbers, integers such as 1, 2, or 3, and the equation predicted the frequencies of the bright lines. The problem was, he did not know what these integers represented. The whole mystery unraveled, however, when Bohr developed a model of the atom with circular pathways for the electron. These pathways were at fixed distances from the nucleus. Electrons could be found only in these circular pathways. If an

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