The study of matter is the study of all material things, as well as their ability to transform from one state to another. All matter assumes one of several basic statessolid, liquid, gas, and plasma being the most common. Under varying conditions, each state can be altered to form new substances or adopt new characteristics. This insightful book covers the various structures and elements of different types of matter, while examining the physical and chemical properties that allow for permutation and change.
A fun-filled introduction to matter, the elements of the periodic table, atoms, electrons, reactions and bonding, and radioactivity, this volume provides young adults with chemistry examples that reflect their real-world interconnections in science. Key terms, easy experiments, and clear illustrations help to guide students through chemical applications. A chapter about Niels Bohr and his model for the atom honors his contribution to the understanding of atomic structure and to nuclear fission. Tools and techniques, such as a scanning tunneling microscope, Rutherford's gold foil experiment, and a mass spectrometer, highlight this instructive text that is aligned to the Common Core Standards.
This annotated reference provides information on the copyright status of over 20,000 features, short films, television programs, and documentaries. The United States copyright system allows a film to fall into the public domain if a renewal is not filed in the twenty-eighth year after its release. Such public domain films may be used by anyone for free, but finding out which films are or are not still under copyright can be expensive and tedious. This guide alleviates that expense and drudgery by including all motion pictures registered for copyright in the 1950s, as well as 500 that were received after 1959. The book also includes an overview of the copyright system and sample certificates. All renewals of copyrights are noted, allowing readers to clearly see which items are or are not in the public domain.