Calculating the necessary energy to recycle aluminum from aluminum oxide which was a question on the 2015 AP Chemistry exam. [6:16]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

In this lab-based activity the students will use their knowledge about the law of conservation of energy to explain the loss of heat by warm water to cold water. Then, the students will use these concepts to design and carry an experiment to determine the unknown temperature of a hot water sample.

A truly complete biography of the great man. Some adequate discussion of his theoretical and scientific work, but the accent here is on his personal life. Many anecdotes, many quotes from him, many references and hotlinks to other science personalities. A great resource!

In this experiment, two chemicals that can be found around the house will be mixed within a plastic baggie, and several chemical changes will be observed.

Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Discuss the concept of entropy
Explain the first and second laws of thermodynamics

Paul Andersen explains the different forms and units for energy. A discussion of the laws of thermodynamics is also included. Sample conversion problems using dimensional analysis is also included. Utilize the practice problems and concept map. [8:53]

Example of calculating energy using the First Law of Thermodynamics. [7:14]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This investigation will have students testing how heating and cooling can change the state of matter. They will test a variety of materials determine whether a change takes place through heating/cooling.

This activity is a 2 part lab activity where students record properties of various bars of soap, and make models of molecules as they are cooled or heated. Students develop a new experiment changing one variable.

Acting as an overview from the General Chemistry Virtual Textbook, this site seeks to answer the question, what is a reversible reaction? Acting as part of a larger informative site on equilibrium, various topics are addressed including the mechanism of the reaction, thermodynamics, chemical change, and more.

With an overview of topics related to chemical energetics, this site provides a foundation to a study of thermodynamics and its relation to energy, heat, and work.

With an overview of topics related to chemical equilibrium, this site provides a foundation to a study of thermodynamics with specific attention on the second law.

This site provides a detailed overview of chemical reactions. Content explores what a reaction is, as well as different types of reactions, reaction rates, how to measure compounds to create a reaction, and "stuff" you can add to a reaction to speed it up or slow it down.

This site provides a general overview of thermochemistry, the division of chemistry that deals with temperature in chemical reactions. Content explores what heat and cold really are, the heat and energy around you, and a bit about Lord Kelvin.

A work in progress, CK-12 Chemistry Teacher's Edition supports its Chemistry book covering: Matter; Atomic Structure; The Elements; Stoichiometry; Chemical Kinetics; Physical States of Matter; Thermodynamics; Nuclear and Organic Chemistry.

Students learn and apply concepts in thermodynamics and energy—mainly convection, conduction, and radiation— to solve a challenge. This is accomplished by splitting students into teams and having them follow the engineering design process to design and build a small insulated box, with the goal of keeping an ice cube and a Popsicle from melting. Students are given a short traditional lecture to help familiarize them with the basic rules of thermodynamics and an introduction to materials science while they continue to monitor the ice within their team’s box.