Young scholars study how to complete thermochemical equations.  In this equation lesson students learn how to manipulate equations to calculate energy changes and reactions.

In this chemical reaction worksheet, students determine if given reactions are endothermic or exothermic reactions. Students determine the energy released or consumed when chemical reactions occur. This worksheet has 5 problems to solve.

In this elements learning exercise, learners complete two graphic organizers by comparing the element symbol and melting point for given elements. Then students plot a graph of their atomic radius against proton number.

In this chemistry practice activity, students select the correct response to the given questions. Students apply knowledge about the states of matter, finding vapor pressure and atmospheric pressure.

In this science worksheet, students are using the laws of thermodynamics and a basic knowledge to fill in the sentences with the correct words.

In this chemistry worksheet, students apply reaction equation ratios to solve fifteen problems, including five using a specific formula provided on the worksheet.

In this lab experiment students are asked to determine the standard molar enthalpy of formation of magnesium oxide, MgO. Students are asked to use Hess's Law and the enthalpy changes of several other solution reactions during this...

[Free Registration/Login may be required to access all resource tools.] Students explore the enthalpy changes that occur as substances change between states, and then calculate the enthalpy change involved in the change of state.

[Free Registration/Login may be required to access all resource tools.] Students will use Hess's law of heat summation to add chemical reactions together to produce a desired final equation, and then calculate the enthalpy change for...

A demonstration to introduce energy changes during reactions, and to promote discussion regarding exothermic and endothermic reactions, enthalpy, spontaneity, system, and surroundings.

Check out answers to many common questions about energy and its relationship to chemical change. Understand details in topics such as enthalpy and thermochemistry with these FAQ.

This lesson focuses on heat energy changes in chemical reactions. Exothermic reactions transfer energy to the surroundings. Endothermic reactions take in energy from the surroundings. It also offers links to a video and a test.

Interactive calculator that allows you to input reactants and products of a reaction and calculate the change in enthalpy and Gibbs Free Energy for the reaction.

[Free Registration/Login may be required to access all resource tools.] Students investigate the conditions under which the enthalpy change in a reaction is equal to the heat absorbed or released. Then, they have the opportunity to write...

[Free Registration/Login Required] Move the chemical reaction along, and observe the overall change in enthalpy for each reaction in the simulation. After the activity, answer one challenge question to check for understanding.

in this activity, students calculate the molar enthalpy of dissolving for three ionic solids, and use this information to design a cold pack. In this experiment they measure the heat changes which occur from various salts dissolving in...

Using an illustrated example, the difference between an endothermic and an exothermic reaction is described. The concept of enthalpy, or heat energy change, is explained, and the energy diagrams of reactions are presented.

This resource provides a physical reaction. Hydrous and anhydrous calcium chloride react with water to produce physical exothermic and endothermic reactions.

[Free Registration/Login may be required to access all resource tools.] Students discover the concept of a spontaneous reaction in terms of enthalpy and entropy changes, and then investigate and calculate free energy.

In this part of the MRE scenario, students determine change in the enthalpy of a reaction as the concentration of reactants are varied.

The students discover the basics of heat transfer in this activity by constructing a constant pressure calorimeter to determine the heat of solution of potassium chloride in water. They first predict the amount of heat consumed by the...

[Free Registration/Login may be required to access all resource tools.] Students determine the temperature at which a reversible reaction will achieve equilibrium by using the Gibbs free energy equation, and then describe the...

Provides a Java applet that shows the change in energy of a bonded and a non-bonded atom.

This site provides an excellent overview of the solution process. Content includes a focus on how a solution is formed, energy changes and solution formation, spontaneity and disorder, and solution formation and chemical reactions.