How are the number of protons and electrons related to the charge of an ion?

Protons have a positive charge, electrons are negative; say theres 5 protons and 5 electrons, those cancel each other out therefore it would be neutral or just no charge. If there is more protons then electrons then it would be a positive ion, if there is more electrons then protons then it would be a negative ion

10.063g / 10.00 ml = 1.0063 g/ml which rounds off to 4 sig figs as: 1.006 g/ml