Please help me out with plates

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.