Static electricity

All matter is made uof atoms and most matter you come accross is electrically neutral.

electrons are tiny ,with a small mass

and rubbing togheter they gain enough energy to leave the their atoms

attach to others moving to different surface.

the first object has more protons than electrons

while the object with more electrons gets a negative charge, creating charge imbalance

Like charges repel each other

However,nature tends to balance so the mobile electrons go where they are most needed to restore the balance.

is called static discharge and it's a spark

some materials are conductors

like metals, thaht tend to lose electrons

other are insulators

like glass rubber and plastics