Matter is composed of molecules, which are composed of atoms, which are composed of negatively charged electrons and positively charged protons. Under normal circumstances, the number of protons of an atom is the same as the number of electrons, positive and negative, so it shows an uncharged appearance. However, the electrons are wound around the nucleus, and they are separated from the trajectory by an external force. They leave the original atom and invade other atoms B. The A atom has a positive electric image due to the short electron number, called cation, and B atom is increased by the number of electrons. Negatively charged, called an anion.

The reason for the formation of unbalanced electron dispersion is that the electrons are separated from the trajectory by external forces, including various energies (such as kinetic energy, potential energy, thermal energy, chemical energy, etc.). Any two objects of different materials in normal days. After touching, don't leave, you can have static electricity.
 
When two different objects touch each other, one object loses some electric charge, such as electrons transferred to another object to make it positively charged, while the other does not get some electron-retaining objects and is negatively charged. If the charge is difficult to neutralize during the process of separation, the charge will accumulate and cause the object to be electrostatically charged. Therefore, when the object touches other objects, it will be charged with static electricity. Generally, when a plastic film is peeled off from an object, it is a typical "touch away" electric power. In the ordinary days, the static electricity that is undressed is also "touch away".
 
Solids, liquids, and even gases can be electrostatically charged by touch. Why does the gas also have static electricity? Since the gas is also composed of molecules and atoms, when the air is active, the molecules and atoms will also "touch away" and electrify. Therefore, in our surroundings and even our bodies, there will be a different degree of static electricity. When static electricity accumulates to a certain extent, it will discharge.
 
We all know that the conflict is electrifying and there are very few rumors to touch the electricity. In essence, conflicting electrification is a process of forming a positive and negative charge imbalance. A conflict is a process of constant touch and separation. Therefore, the collision of electricity is essentially a touch away from electricity. On normal days, all kinds of objects may have static electricity due to movement or conflict. Work table tops, floors, chairs, clothes, paper, files, packaging materials, and active air.
 
Another common type of electrification is induction. When a charged object is near an uncharged object, negative and positive charges are induced at both ends of the uncharged conductor.