Given descriptions, diagrams, scenarios, or chemical symbols, students will calculate the energy changes and identify exothermic and endothermic reactions.

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 lesson explains the difference between endothermic and exothermic chemical reactions. It is 4 of 4 in the series titled "Endothermic/Exothermic Reactions."

This lesson explains the difference between endothermic and exothermic chemical reactions. It is 1 of 4 in the series titled "Endothermic/Exothermic Reactions."

This lesson explains the difference between endothermic and exothermic chemical reactions. It is 2 of 4 in the series titled "Endothermic/Exothermic Reactions."

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

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

[Free Registration/Login may be required to access all resource tools.] Students learn about the role of activation energy in a chemical reaction, and the difference between endothermic and exothermic reactions.

The teacher will conduct the whoosh bottle demonstration to engage learners. The class will then begin discussion of endothermic and exothermic physical and chemical changes. The students will then conduct the Science in Motion lab...

Explains the differences between endothermic and exothermic reactions and the role thermodynamic potentials play in them. Examples from nature are also provided.

Here's a full and understandable discussion of Reaction Rates and Equilibrium.

Students will conduct two chemical reactions: endothermic and exothermic. They will see an animation that shows that it takes energy to break bonds and that energy is released when new bonds are formed, and use that animation to explain...

[Free Registration/Login may be required to access all resource tools.] Explains the definition of an exothermic reaction, the role of energy, and examples of exothermic reactions.

Explains what an exothermic chemical reaction and is and gives examples seen in everyday life.

This lesson explains the difference between endothermic and exothermic chemical reactions. It is 3 of 4 in the series titled "Endothermic/Exothermic Reactions."

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

In this chemistry science fair project, students will investigate how pH levels affect the rate of a common form of corrosion, called rusting. The Science Buddies project ideas are set up consistently beginning with an abstract,...

Determine how the starting temperature affects crystal growth and heat generation of a hand warmer in this chemistry science fair project. The Science Buddies project ideas are set up consistently beginning with an abstract, objective,...

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

In this activity, students examine the size, mass, and growth rates for three species of fish. They interpolate and extrapolate from best-fit models. Students compare the growth rates of endothermic and exothermic animals.

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.

Make your own sidewalk chalk, and learn about chemical reactions. During the procedure, feel the heat as energy is released in an exothermic reaction.

[Free Registration/Login may be required to access all resource tools.] Covers the role of energy in chemical reactions.

[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.