Students determine the number of ionizable hydrogen's in an unknown acid and determine the equivalent weight of an unknown acid. They determine the enthalpy change for the ionization of an unknown acid.

Students work through this inquiry-based lab while observing and recording the heat processes taking place. The lab demonstrates exothermic and endothermic processes, and then challenges the students to predict the outcome of an unknown...

[Free Registration/Login Required] Explore endothermic and exothermic processes by making a cold pack or hot pack.

Students can use TI graphing calculators and data collection to find equations of lines using slope-intercept format and graph.

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.

In this chemistry lab, students investigate two types of reactions and answer questions relating to exothermic and endothermic reactions.

Media-rich lesson in which students discover that it takes energy to break bonds, and that energy is released when bonds are formed during the process of dissolving. They also determine whether dissolving is either exothermic or...

A collection of lessons that have middle schoolers completing a design project where they construct, test, and modify a device that uses chemical processes to either release or absorb thermal energy. Site includes work samples,...

Find out what entropy and enthalpy have to do with a spontaneous chemical reaction. [3:44]

Learn about the process of germination in this hands-on science experiment. Includes full list of materials, procedures, and scientific explanation of why plants can survive in a variety of environments.

[Free Registration/Login may be required to access all resource tools.] Describes the law of conservation of energy and how energy is conserved in chemical reactions.

[Free Registration/Login may be required to access all resource tools.] Covers the law of conservation of energy and how energy is conserved in chemical reactions.

Elizabeth Cox illuminates the science behind fire.