Curated OER
Practicing Scientific Literacy
In this science worksheet, students read an article that is scientifically based and decide how to respond to it. They respond to each of the statements listed using their article. Students also write a paragraph about one impact that...
Carnegie Mellon University
Chem Collective: Mineral Composition
In this randomized calculation activity, students calculate the empirical formula of a compound given its elemental analysis. Step-by-step support and feedback is provided for students who need additional help.
CK-12 Foundation
Ck 12: Percent Composition and Empirical & Molecular Formulas
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will learn to calculate the percent composition of a compound either from mass data or from the chemical formula. They will use...
Texas Education Agency
Texas Gateway: Empirical Formula
This tutorial reviews how to calculate molecular formula by giving students video, exercises, and practice.
Texas A&M University
Texas A&m: Steps for Determining an Empirical Formula
The steps for determining an empirical formula are listed on this site. Also, it tells how to determine the molecular formula from an empirical formula. Two example problems are worked through step by step.
Crescent Public Schools
The Internet Science Room: Percentage Composition and Empirical Formulas
Students learn how to find percentage composition, the percentage of a formula mass represented by each element. Percentage composition compares the mass of one part of a substance to the mass of the whole.
Towson University
Towson University: Determining Formulae
Explanation of how to calculate empirical and molecular formulas.
Clackamas Community College
Clackamas Community College: Empirical Formulas
This site presents as explanation for calculating empirical formulas from composition data. Numerous examples are given, along with practice problems.
CK-12 Foundation
Ck 12: Chemistry: Empirical Formula
[Free Registration/Login may be required to access all resource tools.] Covers empirical formula.