chemical reactions

Explains fundamental chemistry concepts, and shows how engineers combine the science of chemistry with the engineering design process to solve challenges.

An introduction to the basics of energy and reactions, covering heat and chemical reactions, entropy and free energy, reaction speed, and more.

An introduction to the basics of chemical reactions, covering the bond between atoms, types of chemical reactions, using and creating energy, and more.

Learn about common acids and bases from lemon juice to ammonia.

Presents the Standard Deviants approach to learning chemistry, focusing on the role of heat in chemical reactions, with discussion of endothermic and exothermic reactions, calorimetry, and atomic structure.

Presents an exploration of chemistry, examining topics such as chemical reactions, the use of chemistry in crime investigation, and combustion; includes quizzes on the featured material.

Explains that chemical reactions release or absorb energy, describes the factors that affect the rate of a reaction, presents a laboratory investigation of the rate of a chemiluminescent reaction, and more.

Presents simple experiments that demonstrate how various materials may change when mixed with other materials.

Discusses the interconnectedness of ecosystems, and covers chain reactions caused by use of certain products, such as coal, gasoline and antibacterial soap, and the effects of global warming, extinction, and invasive species.

Explores the difference between physical and chemical changes through examples in nature and in the laboratory, including investigations of electrical circuits and current flows.