Curated OER
Introducing Chemistry Vocabulary
Students study vocabulary based on chemistry terms by creating flash cards. For this scientific vocabulary lesson, students utilize a chemistry word or phrase to create a card which uses the term, describes it in the student's...
American Chemical Society
Middle School Chemistry: Controlling Amount of Products in a Chemical Reaction
Students analyze the chemical equation for the reaction between vinegar and baking soda. They observe that the gas produced in the reaction is also part of the products of the written chemical equation.
BBC
Bbc: Gcse Bitesize: Chemical Calculations
You should be able to calculate the masses of reactants and products from balanced equations, and the formula of a compound from information about reacting masses.
Chem4kids
Chem4 Kids: Stoichiometry
This site provides a great overview of stoichiometry, the part of chemistry that studies amounts of substances that are involved in reactions. Content focuses on what you measure, and includes two examples.
CK-12 Foundation
Ck 12: Chemistry: Conservation of Mass
[Free Registration/Login may be required to access all resource tools.] Describes the law of conservation of mass.
Sophia Learning
Sophia: Chemical Reactions: Stoichiometry
This lesson on stoichiometry demonstrates how to use a balanced chemical equation to determine the mass of a product given the starting mass of a reactant. [7:55]
BBC
Bbc: Gcse Bitesize: Calculations for All Students
Law of conservation of mass: No atoms are created or destroyed in a chemical reaction. They just join together in a different way than they were before the reaction, and form products. This means that the total mass of the products in a...
CK-12 Foundation
Ck 12: Stoichiometric Calculations
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will learn to calculate the amount in moles of a reactant or product from the mass of another reactant or product. They...
American Chemical Society
Middle School Chemistry: Lesson Plans: What Is a Chemical Reaction?
After observing a demonstration of a chemical reaction between a burning candle and the oxygen in the air, young scholars use atom model cut-outs to model the reaction and see that all the atoms in the reactants show up in the products.
Georgia Department of Education
Ga Virtual Learning: Chemistry: Stoichiometry
Through informational text, interactive practice problems, video clips, and real-world application, students are introduced to the science of Stoichiometry.
CK-12 Foundation
Ck 12: Stoichiometric Calculations
[Free Registration/Login may be required to access all resource tools.] Based on the balanced chemical equation, students will calculate the masses or moles of reactants or products generated in a given reaction. They will also convert...
Chem Tutor
Chem Tutor: Chemistry: Reactions
This lesson focuses on chemical reactions including what they are and an explanation of each part of a chemical equation.
Crescent Public Schools
The Internet Science Room: Balancing Chemical Equations
Students learn the basics of writing and balancing the chemical equations of chemical reactions.
CK-12 Foundation
Ck 12: Chemical Equations
[Free Registration/Login may be required to access all resource tools.] Students explore mass relations between reactants and products for a given chemical process, and practice balancing chemical equations.
Purdue University
Chem Ed: Chemical Reactions
Because atoms are neither created nor destroyed in a chemical reaction, the total mass of products in a reaction must be the same as the total mass of the reactants.
Texas Instruments
Texas Instruments: Conductimetric Titration & Gravimetric Determination
Students use a Conductivity Probe to measure change in conductivity during a chemical reaction and determine the equivalence point of the reaction They determine the mass of the product and calculate the molar concentration of the...
Other
Science Alive: Chemical Reactions and How You Know When You've Made Something
In this activity, young scholars carry out a chemical reaction in which two reactants (baking soda and hydrochloric acid) produce three products (sodium chloride, carbon dioxide gas, and water) and determine that the solid product...
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Chemical Calculations and Chemical Equations [Pdf]
This chapter on chemical calculations and equations focuses on equation stoichiometry. Learn how to convert masses, use limiting reactants, and calculate the molarity of a solution.