These questions, being so basic, were harder to find answers to on the forums (or elsewhere). At least, it was harder to find an answer that satisfied my curiosity. I need a DEEPER, simpler, and more logical understanding of these concepts.: What does it mean for a particle to have a positive or negative charge? Why do positive and negative charges attract? How would this apply to the Quantum model of electrons and protons in an atom? Thanks *and trust me, deeper and simpler don't contradict each other by my definition. I'm sure most of you will understand.