This page is an exercise in relating the number of protons, electrons, and neutrons for an atom or monoatomic ion.

This lesson plan explores the fundamentals of atoms and their structure. The building blocks of matter (protons, electrons, neutrons) are covered in detail. Learners think about how atoms and molecules can influence new technologies...

An atom is made of three parts - protons, neutrons, and electrons. Here you can explore these different parts.

Fun and interesting illustrated information on atoms including composition, elements, and history.

Students explore the periodic table and learn the basic information given for elements: the name, symbol, atomic number, and atomic mass for each element.