Final answer:
The use of a model is crucial for studying atoms because we cannot directly observe the parts of an atom. Models like the Bohr model or the kinetic theory of gases help us visualize and understand atomic structure and behavior.
Step-by-step explanation:
Models are an essential aspect in the study of atoms because the parts of an atom cannot be directly observed. A model provides a visual or mental representation of an atom that can help us understand its structure and the behavior of its components, such as electrons and the nucleus. While models are not perfect and may not accurately represent all aspects of reality, they are based on experimental evidence and are useful for making predictions, explaining observed phenomena (like atomic spectra), analyzing scenarios, and representing situations for simulations. They help bridge the gap between the microscopic world, which is beyond our direct sensory experience, and our macroscopic interpretation and understanding.
Given this information, the correct answer to th e question about why a model is useful for studying atoms is C. The parts of an atom cannot be directly observed. Models like the Bohr model of the atom and the kinetic theory of gases serve as tools to develop understanding for scientists.