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Evaluate atomic spectra lab answer key1/23/2024 ![]() Such spectra are produced by elements when sufficient energy is added. Discontinuous spectra contain only spectral lines of specific wavelengths. When observations are made of continuous light spectra, like natural sunlight or incandescent light bulbs, scientists can see every wavelength of visible light. In his experiments, Bohr knew that light acts both as a wave and a particle. His results indicated the electrons were found on the outside of the atom, contradicting the previous “plum-pudding model.” At this point, Niels Bohr used his observations of atomic light emissions to further revise atomic models. The next step of the puzzle was found through Rutherford’s alpha radiation experiments. Thomson, for example, used his observations of his famous cathode ray experiments to make the connection that the negative charge of the cathode ray was caused by the negatively charged electrons within the atom. Since direct observations cannot be made, scientists must make inferences about the properties and structure of the atom based upon observations of energy. This task is particularly challenging due to the incredibly small size of atoms and subatomic particles. Background Information for Teachers: Since Democritus described the first idea of “atoms” in Ancient Greece, scientists have been investigating the underlying structure of the atom.Follow the teacher’s instructions for cleanup and disposal of materials.Students should wash their hands thoroughly before leaving the lab.Always wear safety goggles when handling chemicals in the lab.This lesson supports students’ understanding of Analyze student models of electrons within the atom to create and revise a scientific argument of the location of electrons within the atom.Analyze data from the emission spectra of a hydrogen atom to refine their model of electrons within the atom.11-12.8: Evaluate the hypotheses, data, analysis, and conclusions in a science or technical text, verifying the data when possible and corroborating or challenging conclusions with other sources of information.īy the end of this lesson, students should be able to 11-12.7: Integrate and evaluate multiple sources of information presented in diverse formats and media (e.g., quantitative data, video, multimedia) in order to address a question or solve a problem. SAP-8.B: Explain the properties of an absorbed or emitted photon in relationship to an electronic transition in an atom or molecule.SAP-8.A: Explain the relationship between a region of the electromagnetic spectrum and the types of molecular or electronic transitions associated with that region. ![]()
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