Question

1. predicting how would the results of thomsons experiment change if the beam were a stream of neutrons instead of a stream of electrons?

Explanation:

In Thomson's experiment, electrons are charged particles. Neutrons are neutral. Electric and magnetic fields affect charged particles. Since neutrons have no charge, they would not be deflected by the electric and magnetic fields in the experiment.

Answer:

The beam (of neutrons) would not be deflected by the electric and magnetic fields.