Question

Which is a way that the model of the atom became more accurate due to new investigations? Select one: A. Experiments showed that the atom is made of smaller particles. B. Neutrons were detected orbiting the nucleus. C. Cathode-ray tube experiments showed that the atom is indivisible. D. Thomson showed that the atom contains alpha particles.

Answer 1

A. Experiments showed that the atom is made of smaller particles. Reason being: neutrons don't orbit the nucleus, the atom is not invisible, and alpha particles are larger than hydrogen atoms, which cancels out the possibility of atoms consisting of them (you can't be made of something larger than yourself).

Answer 2

Answer: The correct answer would 100% be A.  Experiments showed that the atom is made of smaller particles.

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