This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 2 of 3 in the series titled "Periodic Trends: Atomic Radius."

Explore the concept of electronegativity and how it trends across the periodic table of elements. The author uses simple, humorous drawings to help with understanding.

This StudyCards stack enables students to review the terms associated with learning and using the Periodic Table of the Elements.

This lesson will explain how the ionic radius changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Period Trends: Ionic Size."

This page gives useful numerical and qualitative information about copper, chemical symbol Cu. Includes videos of certain reactions, electronic configuration, and information about the isolation of copper metal.

This page gives useful numerical and qualitative information about silver, chemical symbol Ag. Includes videos of certain reactions, electronic configuration, and information about the isolation of silver metal.

The students will play a game of Battleship on the Periodic Table to review electron configuration of the elements.This lesson plan was created as a result of the Girls Engaged in Math and Science University, GEMS-U Project.

Slideshow looking at the history of models of the atom, including those proposed by John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and James Chadwick. Discusses subatomic particles, including the numbers of protons, neutrons,...

This page gives useful numerical and quantitative information about gold, chemical symbol Au. Includes videos of certain reactions, electronic configuration, and information about the isolation of gold metal.

This site provides a definition and other useful information about the enthalpy of vaporization.

A short page dedicated to the Shielding Constants of the elements in the Carbon Family.

How well do you know your elements? The computer will randomly pick the name of one of the elements. Use the clue to discover which element the computer picked. Be careful! Each incorrect letter you guess causes the atom man to decay.

A quiz over stars and elements. Students can test their understanding of the star and element unit that covered over chemistry, periodic table of elements, and famous scientists. Quiz contains thirteen multiple choice questions.

Find out what you know about elements by completing this crossword puzzle! This puzzle focuses on the chalcogen elements.

A few well done paragraphs on chlorine, with descriptions of the element and its properties. One nice feature is that any technical term has a link to help you better understand it.

This article is designed to inform people of the health risks associated with plutonium. It explains how a person might be exposed to the element, and what the effects might be.