Curated OER
2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
Pingry School
Heat of Reaction and Hess's Law
Melting and burning might seem like opposites, but both exist as common examples of exothermic reactions. Scholars work with three different exothermic chemical reactions to determine the enthalpy changes. They measure and mix chemicals,...
Chemistry Collective
Virtual Lab: Determining the Heat of Reaction in Aqueous Solution
It's gettin' hot in here! An investigative activity has learners measure the heat of reaction in a virtual setting. After exploring the reaction, they attempt to create a solution at an exact temperature.
American Chemical Society
Exothermic, Endothermic, and Chemical Change
Scientists can't observe bonds breaking or forming, so how do they distinguish between exothermic and endothermic reactions? Young scholars complete two experiments to do just that. They monitor temperature change and calculate the...
CK-12 Foundation
Hotpack - Coldpack
Chemistry can help athletes and others protect and treat injuries. Use the interactive activity to explore the chemical reactions in instant hot and coldpacks. Learners manipulate the type of salt in the pack and watch the reaction take...
Curated OER
More Thermochemistry Problems
This two-page assignment covers basic thermochemistry concepts. Chemistry learners identify exothermic and endothermic processes, explain a phase change graph, and draw an energy level diagram. There are no problems to solve, just...
Curated OER
Metals and Hydrogen Cars: Chemistry 10-12
Students investigate which metal is best to use as storage material in hydrogen cars. In this chemistry lesson, students differentiate endothermic and exothermic reactions. They write a reflection paragraph about what they learned in the...
Curated OER
Energy Changes, Rates of Reactions, Nuclear Chemistry
In this energy changes, rates of reactions and nuclear chemistry worksheet, high schoolers solve 14 problems to review concepts about endothermic and exothermic reactions, heat of combustion, heat of reactions, enthalpy, kinetic and...
Curated OER
Writing "Thermochemical" Equations
In this thermochemical equations worksheet, students read about and practice writing equations for thermochemical reactions. They also sketch enthalpy diagrams of the equations if applicable.
Curated OER
AP Chemistry Thermochemistry 2
In this thermochemistry worksheet, students solve a variety of problems including finding heats or reactions, determining specific heats of substances, finding the amount of energy released in a calorimeter determining the final...
Curated OER
Thermochemistry Practice
In this thermochemistry worksheet, students solve six problems identifying changes in heat, heat of formation and the amount of work done given various conditions of an equation.
Curated OER
Role of Energy in Reactions
In this energy learning exercise, students determine the enthalpy of exothermic and endothermic reactions. This learning exercise has 1 fill in the blank and 4 short answer questions.
Curated OER
Worksheet Heat of Reaction (Bond Energies)
In this bond energies worksheet, students analyze bond enthalpy data in order to estimate the change in heat, in kilojoules, of three different chemical reactions.
Curated OER
WS Heat of Reaction
For this heat of reaction worksheet, students use standard enthalpies of formation in order to determine the heat of reaction for 4 different chemical reactions.
Curated OER
Heat of Formation
In this reactions worksheet, learners calculate the heat of reaction for given chemical reactions. This worksheet has 3 problems to solve.
Carnegie Mellon University
Chem Collective: Meals Ready to Eat
While camping on the Appalachian Trail, a storm dampens all the fire wood and you must design a chemical reaction to heat your meal. In this activity, students design an experiment in the virtual lab to determine the heat of reaction for...
TeachEngineering
Teach Engineering: Heat Transfer: From Hot to Not
Students learn the fundamental concepts of heat transfer and heat of reaction. This includes concepts such as physical chemistry, an equation for heat transfer, and a basic understanding of energy and heat transfer.
Chemistry Collective
Chem Collective: Determining the Heat of Reaction in Aqueous Solution
In this activity, students perform an experiment to determine the heat of a reaction.
CK-12 Foundation
Ck 12: Rates of Reactions
[Free Registration/Login may be required to access all resource tools.] In this module, students will practice expressing the rates of chemical reactions, and they will also describe the collision theory as it relates to chemical reactions.
State University of New York
State University of New York: Calorimetry Measuring Heats of Reaction
This simulation uses a "bomb calorimeter," which is designed to measure heat produced during a combustion reaction, where a compound is burned using excess oxygen.
Sophia Learning
Sophia: Identify Enthalpy of Reaction
A video tutorial explaining the enthalpy of a reaction using an energy diagram. [2:42]