Worksheet - Line Spectra (ans)

Worksheet - Line Spectra (ans) - Warm-Up Atomic Spectra and...

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Warm-Up: Atomic Spectra and Bohr’s Atomic Theory Use these words to complete the paragraph below. Quantized Steps Quanta Circles Quantum Lower Electrons Wavelengths Light Heated Higher Ground state Energy levels Excited Energy To Bohr, the line spectra phenomenon showed that atoms could not emit energy continuously, but only in very precise (discrete)quantities (he described the energy emitted as quantized). Because the emitted light was due to the movement of electrons , Bohr suggested that these subatomic particles could not move continuously in the atoms (as Rutherford had suggested)but only in discrete steps . Bohr hypothesized that electrons occupy specific energy levels . When an atoms is excited, such as during heating, electrons can jump to higher energy levels. When the electrons fall back to lower energy levels, precise quanta of energy are released as specific wavelength (lines) of light. Under Bohr’s theory, an electron’s energy levels can be imagined as circles around the nucleus. Normally, electrons exist in the
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