What are the sub-atomic particles that atoms are made up of called?

What are electrons?

What are protons?

What are neutrons?

Why does the nucleus have an overall positive charge?

Why do atoms have no overall charge?

What does the atomic number tell you about an element?

What is the mass number of an atom equal to?

What does the electron arrangement of an atom show?

What are isotopes?

What can the RAM be used for?

What is an ion, and how are they formed?

Metal atoms...to form...
Non-metal atoms...to form...

Why do atoms gain or lose electrons?