Explain how an atom is composed of charged particles yet can have an overall charge of zero.

Atoms have an overall charge of zero because the charge of the electron is canceled by a proton and a neutron has a net charge of 0.If you were to take out an electron,you will create an ion(ion is an atom with a charge).This ion will have a charge because it now has different amount of electrons and protons.

Source:webcast.berkeley.edu

The answer is accuracy

In any atom of any element, you will find protons and neutrons in the nucleus of any atom