Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Cation Names and Formulas
Learn how to predict cation names, charges, and formulas. See how you can use the periodic table to help predict what metallic atoms will do.
Simon Fraser University
Chem1 Virtual Textbook: Simplest Formulas From Experimental Data
As part of the "Basic Atomics" section of the Virtual Textbook, this site a variety of topics related to simplest formulas including simplest formulas from atom ratios, simplest formulas from mass composition, and more.
Crescent Public Schools
The Internet Science Room: Oxidation Numbers and Chemical Bonding
Through animated diagrams and illustrated examples, students can further their understanding of chemical bonds and oxidation numbers.
Scholastic
Scholastic: Study Jams! Science: Matter: Elements & Compounds
A video and a short quiz on elements, how they combine through chemical reactions to make compounds, and how to write the chemical formulas for water and salt.
American Chemical Society
Middle School Chemistry: What Is a Chemical Reaction?
Use chemical formulas to visualize how chemical equations are balanced.
CK-12 Foundation
Ck 12: Chemistry: Molecular Formula
[Free Registration/Login may be required to access all resource tools.] Defines molecular formula and describes how to write molecular formulas.
CK-12 Foundation
Ck 12: Physical Science: Chemical Equations
[Free Registration/Login may be required to access all resource tools.] An overview of chemical equations.
CK-12 Foundation
Ck 12: Physical Science: Chemical Formula
[Free Registration/Login may be required to access all resource tools.] How to write chemical formulae and what they represent about the substance.
Frostburg State University
General Chemistry Online: Faq the Mole Concept
This FAQ site over general chemistry concepts presents the question: "Why are moles used?" It explains what moles are and how they can be used to count molecules and how grams can be turned into moles.
Museum of Science
The Atom's Family: Mighty Molecules
In this activity, students construct models of molecules using marshmallows and gum drops.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Binary Covalent Nomenclature
Quiz yourself on binary covalent nomenclature with this interactive animation. Convert formulas to names or names to formulas while learning some common compounds.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Anion Names and Formulas
Test yourself on the names and formulas of some common anions. This interactive animation makes it fun to learn about atoms that have gained electrons.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Determination of Empirical and Molecular Formulas:
Listen as this audio book shows the determination of empirical and molecular formulas. View the formula to calculate empirical and molecular formulas and the written steps for calculating.
Other
Fernbank: Review of Ionic Charges
At this site from Fernbank you can become a pro by practicing them with this review game.
Quia
Quia: Molecular Compounds and Acids Quiz
A fifteen-question multiple-choice quiz where students are given a formula and must choose the correct name for it.
ClassFlow
Class Flow: What Is Matter?
[Free Registration/Login Required] Discover the composition of matter and the relationship between matter, atoms, and elements. Students will learn the differences between elements and compounds, and how molecules are formed. Chemical...
Other
Science geek.net: Ions and Compound Formulas
A twenty-question multiple-choice exercise about chemical formulas. Quiz gives immediate feedback with the correct answer.
Mocomi & Anibrain Digital Technologies
Mocomi: Difference Between Elements and Compounds
Find out the difference between elements and compounds, the types of compounds, and how to write a compound formula.