Chemistry, 13.10.2020 08:01 ella3714

1. Amy's science teacher shows her class a model of an atom. Why is a model useful for studying atoms? A. All atoms exist in the gas phase, and atmospheric gases are invisible.
B. A model is helpful to observe the behavior of the parts of an atom.
C. The parts of an atom cannot be directly observed.
D. A model of an atom is the same for all atoms.

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1. Amy's science teacher shows her class a model of an atom. Why is a model useful for studying atom...