Here's why:
* Atoms are neutral: Atoms have an equal number of protons (positive charge) and electrons (negative charge), making them electrically neutral.
* Charging by friction: When two objects are rubbed together, electrons can be transferred from one object to the other. The object that gains electrons becomes negatively charged, while the object that loses electrons becomes positively charged.
* Charging by conduction: When a charged object touches a neutral object, electrons can flow from the charged object to the neutral object. This causes the neutral object to become charged with the same type of charge as the charged object.
* Charging by induction: When a charged object is brought near a neutral object, electrons in the neutral object can be redistributed. This can cause the neutral object to become polarized, with one side becoming slightly positive and the other side slightly negative.
Important Note: While protons are also positively charged particles, they are located in the nucleus of the atom and are much more tightly bound than electrons. Therefore, it's much easier for electrons to be transferred during charging processes.
