National Chemistry Olympiad tests are released after their use each year, since they cannot use them again for this event. The result: outstanding comprehensive assessment resources for general chemistry classes! This 2005 version covers...

Friction leads to movement, heat, and melting on such a small scale most people don't notice. A short simulation permits scholars to observe the reaction between atoms as they move together.  The simulation applies the concept of...

In this chemistry competencies instructional activity, students calculate rate law, balance equations, determine pH of solutions, give the oxidation number for atoms, and write in formulas. This instructional activity has 4 fill in the...

In this chemical reaction worksheet, students balance equations and then determine the theoretical yield and percent yield for the reaction. This worksheet has 4 problems to solve.

Eighth graders explore chemical reactions and their products. They define a chemical reaction and describe the characteristics of a chemical reaction. Students classify chemical reactions.

For this reactions worksheet, students read about two types of reactions that take place between metals: displacement and competition. Then, they answer two problems.

In this chemical reactions learning exercise, students practice writing chemical formulas, word equations, and symbol equations. They also identify the types of reactions. This learning exercise has seven problems to solve.

In this chemical equations instructional activity, students balance chemical equations and then calculate the theoretical yield and percent yield for the reaction. This instructional activity has 4 problems to solve.

In this expressions and operations instructional activity, 9th graders solve and complete 10 different multiple choice problems that include various types of expressions. First, they determine the complete factorization of a given...

In this reactions worksheet, student determine the products of a reaction, balance an equation, and calculate the number of moles in an experiment. This worksheet has 4 problems to solve.

For this redox review worksheet, students determine the balanced net cell reaction, calculate the value of the equilibrium constant, and write the balanced net ionic equation for reactions. This worksheet has 13 problems to solve.

In this balancing equations worksheet, students walk through 1 sample equation in which they determine the number of atoms for each element then add coefficients to the equation to balance the atoms. After completing the sample, they...

In this titration worksheet, students calculate the pH of a solution at different points during a chemical reaction. Students write a balanced net ionic equation for the major equilibrium reaction. This worksheet has 3 problems to solve.

Students define and identify endothermic/exothermic reactions. Using a series of experiments, they construct and interpret potential energy diagrams for their reactions.

In this chemistry worksheet, learners calculate specific changes that take place with different chemical reactions. Students indicate whether the reactions are endothermic or exothermic and spontaneous or nonspontaneous.

In this rates worksheet, students determine the rate of production or consumption for given reactions. Students write chemical equations in complete ionic form or net-ionic form. This worksheet has 6 problems to solve.

In this enthalpy equation worksheet, learners are given 3 examples of chemical reactions. Students then respond to 4 practice problems and 1 challenge problem in regard to heat and energy change and release.

Students engage in a lab project to study chemical reactions. They use guided questions to help facilitate the lab experience and come to the correct outcomes. The lesson does not contain a true understandable objective. The lesson could...

In this titrations worksheet, students calculate the concentration of solutions and the molarity of solutions for the given chemical equations. This worksheet has 4 problems to solve.

In this stoichiometry worksheet, learners identify types of reactions, show the products, and balance the equations. Students determine the limiting reagent, theoretical yield, and percent yield for given reactions. This worksheet has 5...

In this chemical equation worksheet, students learn about atoms, elements and how to balance chemical equations. They walk through a few problems step by step, and then students attempt to complete some on their own. In total, there are...

In this stoichiometry activity, students balance equations and name the reactants and products. This activity has 2 problems to solve.

In this moles worksheet, students calculate the number of moles found in a specific chemical compound mass. Students also calculate how many moles in produced in specific reactions. This worksheet has 4 problems to solve.

For this stoichiometry worksheet, students determine the molar ratio for chemical equations. Students calculate moles and grams for reactions. This worksheet has 10 problems to solve.