negatively charged
If a neutrally charged object gains electrons, it becomes negatively charged. Electrons carry a negative charge, so adding more electrons to an object will result in an overall negative charge.
When unlike charges come in contact, electrons transfer from the object with excess electrons (negative charge) to the object lacking electrons (positive charge). This equalizes the charge between the two objects, resulting in a neutral charge overall.
The object that loses electrons becomes positively charged, as it has more positive protons than negative electrons. This imbalance in charge may cause the object to attract other objects with a negative charge.
When an object has too many electrons, it carries a negative charge. This is because electrons have a negative charge, so an excess of electrons on an object results in an overall negative charge.
Electrons can move from object to object. Electrons have a negative charge. So if an object is determined to have a positive charge, then some of the electrons have moved from the object to somewhere else. Something with a neutral charge has the same number of electrons [-] and protons [+]. If electrons [-] leave, then there will be more protons, and a net positive charge. If an object gains electrons, then the object has a net negative charge.
negative
That depends entirely on sign of the charge. If the object gains a positive charge, then that means the object as lost electrons, since electrons are negatively charge. If the charge is negative, then the object has gained electrons. It is also possible that the charge was created by a movement in protons, which are positively charged, in which case the object may not have lost or gained electrons.
Electrons have a positive charge and protons have a negative charge. An atom's nucleus is 99.95% of its weight. When an object gains more electrons, it gains a negative charge that over comes the positive charge. This only happens when there are more electrons than protons.
When an object with a negative charge touches another object, electrons may flow from the negatively charged object to the neutral object until they both reach a neutral state. This transfer of electrons can create a temporary flow of electricity between the two objects.
When an object receives a negative charge, there is no change in its mass. Mass is a fundamental property of matter that is not affected by the addition or removal of charge. The negative charge simply alters the distribution of electrons on the object's surface.
when atoms gain electrons they acquire negative charge
Electrons are the particles that move when an object acquires a net positive or negative charge. In the case of a positive charge, electrons are removed from the object, leaving an excess of positive charge. Conversely, in the case of a negative charge, electrons are added to the object, creating an excess of negative charge.