Science4Fun
Science4 Fun: Periodic Table
What is the periodic table? Learn how the elements are classified according to their properties and are organized into groups and periods.
California State University
California State University: Proton, Electron, Neutron
An interesting and useful tool to practice recognition/calculation of atomic number, mass, and number of neutrons, electrons, etc. Can be used with all elements.
Science4Fun
Science4 Fun: Elements
Fun and interesting information about elements. Learn about the periodic table, how they are distinguished, and the different families of elements.
Mocomi & Anibrain Digital Technologies
Mocomi: Structure of an Atom
An atom is made of three parts - protons, neutrons, and electrons. Here you can explore these different parts.
Wikimedia
Wikipedia: Henry Moseley
This site from the Wikipedia Encyclopedia provides an overview of the life of scientist Henry Moseley. This open-source encyclopedia site discusses his contribution to science and how he found a systematic relation between wavelength and...
Davidson College
Davidson College: Plot of First Ionization Energy and Atomic Number
Here you will find a group of images and graphs which plot covalent radii, first ionization energy, and electron affinity vs. atomic number.