What kind of charge can move from object to object?
Electrons can move from object to object. Electrons have a
negative charge. So if an object is determined to have a positive
charge, then some of the electrons have moved from the object to
somewhere else.
Something with a neutral charge has the same number of electrons
[-] and protons [+]. If electrons [-] leave, then there will be
more protons, and a net positive charge. If an object gains
electrons, then the object has a net negative charge.