Interactive
Chemistry Collective

Virtual Lab: Making Stock Solutions from Solids

For Students 9th - Higher Ed
Combine a little solid and a little water and the solution is clear! An experimental lesson has individuals make calculations to create a sample solution of a given volume and molarity. They then create the solutions using a virtual lab...
Worksheet
Curated OER

The Mole

For Students 10th - 12th
For this moles worksheet, students read about mole and learn how to calculate the number of moles in specific mass of compounds. This worksheet has 14 problems to solve.
Worksheet
Curated OER

Empirical and Molecular Formula Sheet

For Students 10th - Higher Ed
In this formulas worksheet, students solve eight problems and are required to write the empirical and molecular formulas given percentage of elements or quantities in mass.
Lesson Plan
Santa Monica College

The Composition of Potassium Chlorate

For Teachers 9th - Higher Ed Standards
The third lesson in a series of 11 begins by using thermal decomposition of potassium chlorate to determine the mass percent of oxygen. Then a second activity allows scholars to demonstrate that the resulting residue is from a...
Worksheet
Curated OER

Limiting Reagents and Percent Yield Problems

For Students 10th
Twelve questions about the various calculations of mass and yield are given here.  There is significant practice of molarity calculations and consideration of the reactant and product balance.
PPT
Curated OER

Ideal Gas Law

For Teachers 9th - 12th
Young chemists get a handle on the behavior of gases when viewing this presentation. It incorporates thorough explanations of the ideal gas law, molar mass, empirical formulas, and partial pressures. A highlight is the learning check...
Worksheet
Curated OER

Stoichiometry

For Students 10th - Higher Ed
In this stoichiometry worksheet, students review definitions and equations associated with molarity, density, atomic mass, molarity, and dilutions. This worksheet has 18 word problems.
Worksheet
Curated OER

Solutions

For Students 10th - Higher Ed
In this solutions worksheet, students solve twelve problems including calculating products made in reactions, determining limiting reagents, calculating molarity of solutions, determining percent composition, and finding volumes and...
Worksheet
Curated OER

Reactions in Aqueous Solutions

For Students 10th - 12th
In this solutions worksheet, students calculate the molarity and solubility for given reactions. Students work on dilution, precipitation, and titration reactions. This worksheet has 15 problems to solve.
Worksheet
Curated OER

AP Chemistry-Solution Chemistry Practice Problems

For Students 10th - 12th
In this solutions worksheet, students solve fifteen problems including finding molar concentrations, writing net ionic equations, determining molarity of solutions, identifying oxidized and reduced agents and finding mass percent of...
Worksheet
Curated OER

Solutions and Solubility Review

For Students 9th - 12th
In this solutions and solubility review worksheet, high schoolers are given main ideas about intermolecular forces, concentrations of solutions, molar solutions, ionic equations, solubility rules, acids and bases and titrations. Students...
Lesson Plan
Santa Monica College

Titration of Vinegar

For Teachers 9th - Higher Ed Standards
Titration calculations require concentration. The 10th instructional activity in an 11-part series challenges young chemists to use titration in order to determine the molarity and mass percent in concentrated vinegar. Analysis...
Lesson Plan
Chymist

Determination of the Volume of CO2 in Pop Rocks

For Students 9th - 12th
Where does the pop in pop rocks come from? An engaging activity asks scholars to measure the amount of carbon dioxide in a package of Pop Rocks candy. Learners dissolve the candy in water and use the solubility of CO2 to determine its mass.
Interactive
Royal Society of Chemistry

Concentration of Solutions 2

For Students 6th - 12th
Challenging and interactive—everything you need in a resource! Chemistry scholars manipulate a series of puzzles focused on molarity. The teacher's guide provides support for implementing the lesson, as well as printable materials.
Worksheet
Curated OER

Molarity

For Students 9th - 12th
In this molarity worksheet, students are given the equation to find moles per liter of solution. They solve ten problems finding molarity of solutions, moles needed to make particular molar solutions and mass needed to make particular...
Lesson Plan
Virginia Department of Education

Formulas and Percent Compositions of Ionic Compounds

For Teachers 9th - 12th Standards
Try not to blind anyone with science by following the safety rules. The lesson encourages scholars to form an ionic compound from magnesium and chlorine. Then they determine the empirical formula and determine the mole ratio and percent...
PPT
Curated OER

Chemical Equations

For Teachers 9th - 12th
Wow! This comprehensive collection of slides will walk your chemistry class through the foundation of chemical reactions, teach them to balance equations, differentiate types of reactions, and calculate stoichiometry problems. This...
Interactive
Chemistry Collective

Virtual Lab: Cola and Sucrose Concentration Problem

For Students 9th - Higher Ed
Recreate the secret Coca-Cola formula in a virtual lab. Young scholars create the solution and then calculate sucrose concentrations in terms of percent mass, molarity, molality, and mole fraction. Then using density, learners...
Worksheet
Curated OER

Extracting Oxygen from Moon Rocks

For Students 9th - 12th
In this extracting oxygen from moon rocks worksheet, students read about the need for oxygen for lunar colonists. Students solve 2 problems about the lunar mineral ilmenite which contains oxygen and other elements. They find the molar...
Lesson Plan
Curated OER

Mathematical and Chemical Relationships of Stoichiometric Problems

For Teachers 11th - 12th
Students review key words used in stoichiometry such as mole, molar mass, Avogadro's number, and mass - mole relationships. They participate in a series of small experiments to explore solving stoichiometry problems in the laboratory.
Lesson Plan
Virginia Department of Education

Moles Lab Activities

For Teachers 9th - 12th Standards
Want my name and number? It's 6.0221415 times 10 to the 23rd, and my name is Avogadro. Providing nine different activities, experiments, and labs, this lesson keeps Avogadro relevant to your class all year long. 
Lesson Plan
Curated OER

Worksheet 2-2 Stoichiometric Tools

For Teachers 10th - 12th
In this stoichiometry worksheet, students solve a variety of problems including finding empirical and molecular formulas, determining molarities of solutions, determining molecular weights of compounds and calculating the percent mass of...
Worksheet
Curated OER

Exam Review: Chemistry Calculations

For Students 9th - 12th
For this chemistry calculations review worksheet, students solve 33 review problems about titrations, precipitates, pressure and volume of gases, combustion reactions, heat of combustion, molar concentrations and molecular formulas.
AP Test Prep
College Board

2015 AP® Chemistry Free-Response Questions

For Students 10th - 12th Standards
More than 80,000 scholars earned college credit for Chemistry with the AP exam in 2015. The College Board released the free-response questions covering topics, including moles, that often confuse scholars. They also released example...

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