Atoms are very small ... in an energy level outside the nucleus. The atom is neutral as it has two positive protons and two negative electrons. A helium atom that has lost or gained an electron ...

Electrons have a charge of -1. Neutrons are neutral, as its name implies ... Ions are attracted to other atoms and molecules. If your atom is too ionized, it will likely zip away from you and ...

To become stable it must lose its two outer electrons to obtain a full outer energy level. Atoms are neutral because they have equal numbers of protons and electrons however, when they lose two ...

The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up ... When the plastic strip is rubbed on the skin, electrons from the ...

A solar cell is made of two ... atoms, an electron vacancy or “hole” is created. The n-type silicon is made by including atoms that have one more electron in their outer level than does silicon, such ...