Curated OER
Hot Rocks
Learners demonstrate that setting of plaster and cement is a change, which involves a release of heat energy, use data collected experimentally to construct comparison graphs and analyze the graphs to make predictions about future...
Curated OER
Chemical Reactions
In this reactions worksheet, students state the differences between a coefficient and subscript and an exothermic and endothermic reaction. Students review the different types of reactions. This worksheet has 13 short answer questions.
Curated OER
Chemistry Practice
In this chemistry practice worksheet, students select the correct response to the given questions. Students apply knowledge about the states of matter, finding vapor pressure and atmospheric pressure.
Curated OER
Combustion
In this combustion pre-lab worksheet, students determine the chemical equation for the reaction, define combustion and exothermic, and describe the molar heat of combustion. This worksheet has 14 short answer questions.
Curated OER
Magic Genie
Learners observe the chemical change that occurs when sodium iodide is dropped into a flask containing 30% hydrogen peroxide. They discuss how this exothermic reaction occurred as they study the chemical equation involved in the reaction.
Science Buddies
Science Buddies: Project Ideas: How Acids Affect the Rate of Corrosion
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,...
Science Buddies
Science Buddies: Project Ideas: Explore the Chemistry Within Hand Warmers
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,...
Science Buddies
Science Buddies: Bring on the Heat! Investigating Exothermic Reaction Rates
Have you ever pulled a muscle or just been sore after a long day of work or exercise? Hot showers are great, but maybe you've used the more convenient heat packs. Heat packs, which you can buy at grocery or drug stores to soothe aching...
Other
Chemical Reax/exothermic Reactions
A wonderfully complete primer on exothermic reactions in the context of chemical spills. Covers Reactions with Air or Water, Combustible Organics, Polymerization Reax, Decomposition, Corrosion, and much much more.
Other
University of Siegen: An Exothermic Reaction
The University of Siegen provides a lovely exothermic reaction shown by four large photos. Sodium peroxide and zinc powder with a touch of water.
Other
University of Siegen: Enthalpy of Solution
This resource provides a physical reaction. Hydrous and anhydrous calcium chloride react with water to produce physical exothermic and endothermic reactions.
Other
Austin Community College: Handout on Enthalpy
A step-by-step example of how to complete Hess's Law problems. This example includes all the manipulations that may be required for Hess's Law.
University of Minnesota
University of Minnesota Outreach: Endothermic and Exothermic Reactions
A nice juxtaposition of endo- and exothermic reactions. Outlines two demonstrations. Barium hydroxide, sodium acetate, ammonium nitrate, ammonia.
Center of Science and Industry
Cosi Columbus: Sidewalk Chalk
Make your own sidewalk chalk, and learn about chemical reactions. During the procedure, feel the heat as energy is released in an exothermic reaction.
Concord Consortium
The Concord Consortium: Molecular Workbench: Explosions
Observe an explosion on a molecular level. Understand how explosions can do work.
Sophia Learning
Sophia: Endothermic/exothermic Reactions: Lesson 4
This lesson explains the difference between endothermic and exothermic chemical reactions. It is 4 of 4 in the series titled "Endothermic/Exothermic Reactions."
Sophia Learning
Sophia: Endothermic/exothermic Reactions: Lesson 1
This lesson explains the difference between endothermic and exothermic chemical reactions. It is 1 of 4 in the series titled "Endothermic/Exothermic Reactions."
Sophia Learning
Sophia: Endothermic/exothermic Reactions: Lesson 2
This lesson explains the difference between endothermic and exothermic chemical reactions. It is 2 of 4 in the series titled "Endothermic/Exothermic Reactions."
CK-12 Foundation
Ck 12: Biology: Energy and Biochemical Reactions
[Free Registration/Login may be required to access all resource tools.] Covers the role of energy in chemical reactions.
Other
Msd Hyper Glossary: Exothermic and Endothermic
This site from the Interactive Learning Paradigms discusses and defines exothermic and endothermic reactions. Further information is given under the definitions along with several links to additonal information. An interesting site.
CK-12 Foundation
Ck 12: Physical Science: Activation Energy
[Free Registration/Login may be required to access all resource tools.] Definition of activation energy and why all chemical reactions require it.
Science Bob Pflugfelder
Science Bob: Fantastic Foamy Fountain
Science experiment shows how yeast mixed with hydrogen peroxide creates not only foam but an Exothermic Reaction.
BBC
Bbc: Gcse Bitesize: Heat Energy Changes in Chemical Reactions
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.
BBC
Bbc: Gcse Bitesize: Exothermic and Endothermic Reactions Aqa
This lesson focuses on Exothermic and Endothermic Reactions. Exothermic reactions transfer energy to the surroundings. Endothermic reactions take in energy from the surroundings. It provides links to a video and a test.