What is heat energy, where does it come from and how does it relate to chemical energy? Heat & Chemical Energy teaches students that heat energy comes from the motion of chemical atoms, and chemical energy is stored in the bonds that link atoms together. Discover how chemical reactions can give off heat energy and how heat can help release the stored chemical energy in fuel. Learn how heat travels through engaging demonstrations that illustrate the methods of conduction, convection and radiation. Students investigate how scientists measure calories -- the energy stored in food -- by constructing a calorimeter and burning a peanut.
Discovery School - 100 Greatest Discoveries - Chemistry
1. Oxygen (1770s) Joseph Priestley discovers oxygen; later, Antoine Lavoisier clarifies the nature of elements. Priestley produces oxygen in experiments and describes its role in combustion and respiration. Then, by dissolving fixed air in water, he invents carbonated water. Priestley, oblivious to the importance of his discovery, calls the new gas "dephlogisticated air." Lavoisier gives oxygen its name and correctly describes its role in combustion.
Work with individual atoms and molecules aims to demonstrate that miniaturized electronic, optical, magnetic, and mechanical devices can operate ultimately even at the level of a single atom or molecule. As such, atomic and molecular manipulation has played an emblematic role in the development of the field of nanoscience. New methods based on the use of the scanning tunnelling microscope (STM) have been developed to characterize and manipulate all the degrees of freedom of individual atoms and molecules with an unprecedented precision.
Steve and Susan Zumdahl's books focus on helping readers build critical thinking skills through the process of becoming independent problem-solvers. Their philosophy is to help readers learn to "think like a chemists" so they can apply the process of problem solving to all aspects of their lives. In Chemistry: An Atoms First Approach (1st Edition), the Zumdahls use a meaningful approach that begins with the atom and proceeds through the concept of molecules, structure, and bonding, to more complex materials and their properties.
Ludwig Boltzmann arguably played the key role in establishing that submicroscopic structures underlie the ordinary world. He had a tremendous impact on late 19th-century and early 20th-century physics, and he anticipated many contemporary ideas, including Kuhn's theory of scientific revolutions and recent theories of knowledge based on Darwinian principles. This book is the first accessible biography of this important figure. Without relying on equations, it provides a deep look at the full range of his scientific and philosophical ideas, discussing both their original context and their relevance today.
