This slide show on atomic bonds contains several slides on electron affinity. Other topics include covalent, Sigma and Pi bonds, and atomic bonding in solids.

An explanation of atomic structure and the element groups in the periodic table using plain language. Supported by diagrams and charts.

Explore the interactions between various combinations of two atoms. Observe the the total force acting on the atoms or the individual attractive and repulsive forces. Customize the attraction to see how changing the atomic diameter and...

Simulations to show students the nature of chemical bonds. Simulations include an explanation of stereochemistry, atomic orbitals, chemical polarity, formation of an atom, and a summary quiz.

A ten-question quiz on the structure of an atom and on atomic bonds.

This lesson will define atomic radius. It is 3 of 3 in the series titled "Atomic Radius."

This lesson will define atomic radius. It is 2 of 3 in the series titled "Atomic Radius."

This site from WebChem contains information on the subject of bonding with an emphasis on valence and core electrons.

Learn about the "father of the atomic bomb", J. Robert Oppenheimer in this article that discusses his life and scientific accomplishments.

This simulation displays the electron configurations of for the elements in relation to the element's position on the periodic table.

Short slide show provides basic information about drawing Lewis dot structures for covalent compounds. Starts with anatomy of the atom, and then shows the relationship between atomic particles and the Periodic Table of Elements. Offers...

Atomic Force Microscopy (AFM) method used to get an image of the first molecule -- a pentacene structure -- in Switzerland, 2009.

A collection of grid puzzles that cover a wide variety of topics in intermediate high school chemistry. These are excellent for topic review and reinforcement. The puzzles can be played online and also downloaded as worksheets. Answers...

This instructor led activity will produce a partially filled periodic table that contains electron-dot models for the first twenty elements in the appropriate boxes. It will be used as a visual tool for students to connect concepts such...

Here at Chem4Kids you can find some great information about the third element in the periodic table, lithium. Content focuses on lithium's electrons, where you can find lithium in nature, and how it bonds with other elements (or with...

In this module Activity 4 investigates How are bonds formed and broken? This activity explores the relationship between energy and the formation and breaking bonds, using the ideas of energy transfer and conversion.

Explore the differences between chemical and physical changes, including some examples at the atomic level.

In this module Activity 3 investigates When atoms get close to each other, what happens to their potential energy? This activity applies energy concepts to compare the potential energy of atoms that are bonded as molecules with the...

Good site for viewing atomic orbitals. Click on an energy level and you get a simulated three dimensional image of the orbitals.

Here you can find some great information about the 12th element in the periodic table, "magnesium." Content focuses on magnesium's electrons, where you can find magnesium in nature and in the home, and how magnesium combines with other...

Here you can find lots of great information about helium. Learn about its electrons, where it exists in nature, and about the element itself!

Click on the left navigation terms for some great information about the 6th element in the periodic table, "carbon." Content focuses on carbon's electrons, where you can find carbon in nature and in the home, and how carbon combines with...

Here you can find some great information about the 7th element in the periodic table, "nitrogen." Content focuses on nitrogen's electrons, where you can find nitrogen in nature and in the home, and how nitrogen combines with other elements.

Here you can find some great information about the 9th element in the periodic table, "fluorine." Content focuses on fluorine's electrons, where you can find fluorine in nature and in the home, and how fluorine combines with other elements.