If an atom gains an electron it takes on a negative charge. If the atom loses an electron it takes on a positive charge. J K L lightening - a powerful flash of electricity between the negative electrical charges in clouds or between a cloud and the ground. M magnetism - the force that electric currents exert on other electric currents. Note that mass and weight are not the same thing.
Weight is the force on an object due to the gravitational pull of a planet or other heavenly body.
Mass on the other hand, remains constant, no matter where it is. It was discovered in 1772 by Swidish chemist Carl Wilhelm Scheele. P potential - the amount of electrification of a point with reference to some standard. Protons, along with other subatomic particles called Neutrons, make up the nucleus of a atom . The number of protons in an atom is called the atomic number of the element.