Final answer:
Models are used in chemistry to represent phenomena and processes, and evidence can lead to changes or revisions in these models.
Step-by-step explanation:
In chemistry, models are used to represent or explain various phenomena and processes. They help scientists visualize and understand complex concepts. For example, the Bohr model is used to represent the structure of an atom, while the ball-and-stick model is used to show the arrangement of atoms in a molecule.
Evidence plays a crucial role in changing these models. As new evidence or experimental data is collected, scientists may revise or develop new models to better explain the observed results. For instance, the discovery of subatomic particles like protons, neutrons, and electrons led to the development of more sophisticated models like the quantum mechanical model.
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