University of Southern California
Atomic Bonds
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.
BBC
Bbc: Gcse Bitesize: Covalent Bonds
A covalent bond is formed between non metal atoms, which combine together by sharing electrons. Covalent compounds have no free electrons and no ions so they don't conduct electricity.
CK-12 Foundation
Ck 12: Lewis Electron Dot Structures
[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how a covalent bond forms, including the energy change involved in the process.Students will be asked to use the octet rule...
Chem4kids
Chem4 Kids: Ions
Here at Chem4Kids you can learn all about ions. Content explores what an ion is, its various characteristics, electrovalence, and more.
Frostburg State University
General Chemistry Online: Ionic and Molecular Compounds
Provides a good outline of the concepts involved in ionic and covalent bonding, with links to definition of terms. Features a list of common molecular compounds and a chart that compares ionic and molecular compounds.
Quia
Quia: Chemical Bonds (Ionic and Covalent) Quiz
This is 21-question multiple choice quiz over chemical bonds was written for a 7th-grade science class.
Sophia Learning
Sophia: Ionic Compounds: Naming Compounds With Polyatomic Ions: Lesson 1
This lesson will provide naming rules for ionic compounds containing polyatomic ions and give examples. It is 1 of 2 in the series titled "Ionic Compounds: Naming Compounds with Polyatomic Ions in Formula."
Sophia Learning
Sophia: Ionic Compounds: Formulas From Compound Names With Polyatomic Ions
This lesson will demonstrate how to write the formula for an ionic compound containing polyatomic ions given the systemic name.
Sophia Learning
Sophia: Naming Polyatomic Ions: Lesson 2
This lesson will explain that polyatomic ions have assigned names ending in -ate or -ite with a few exceptions, and discuss how ammonium is the only common polyatomic ion. It is 2 of 4 in the series titled "Naming Polyatomic Ions."
Khan Academy
Khan Academy: Molecules and Compounds
Article defines and explains compounds which are either ionic or covalent and molecules which are the simplest unit of a covalent compound. Molecules can be represented in many different ways.