The Basics Of Atoms And Molecules

Discusses the basic concepts of atoms and molecules.

Atoms and Molecules describes the basic properties of atoms and molecules in terms of group theoretical methods in atomic and molecular physics. The book reviews mathematical concepts related to angular momentum properties, finite and continuous rotation groups, tensor operators, the Wigner-Eckart theorem, vector fields, and vector spherical harmonics. The text also explains quantum mechanics, including symmetry considerations, second quantization, density matrices, time-dependent, and time-independent approximation methods. The book explains atomic structure, particularly the Dirac equation in which its nonrelativistic approximation provides the basis for the derivation of the Hamiltonians for all important interactions, such as spin-orbit, external fields, hyperfine. Along with multielectron atoms, the text discusses multiplet theory, the Hartree-Fock formulation, as well as the electromagnetic radiation fields, their interactions with atoms in first and higher orders. The book explores molecules and complexes, including the Born-Oppenheimer approximation, molecular orbitals, the self-consistent field method, electronic states, vibrational and rotational states, molecular spectra, and the ligand field theory. The book can prove useful for graduate or advanced students and academicians in the field of general and applied physics.

Atoms and molecules are the basic building blocks of matter. Matter is every physical thing around us in the universe, including our own bodies! In Explore Atoms and Molecules! With 25 Great Projects, readers ages 7 to 10 investigate the structure of atoms and learn how atoms fit together to form molecules and materials. If everything is made out of atoms and molecules, why do people look different from dogs and doorknobs? In Explore Atoms and Molecules, readers discover that the characteristics of a material are determined by the way the atoms and molecules connect, and study how chemical reactions change these connections to create everything we know. This book discusses the elements on the periodic table and why they are grouped into families, encouraging the exploration of meaningful classification systems. States of matter and mixtures and compounds round out the exploration of atoms and molecules! This book supports the maker movement with lots of hands-on activities that illuminate the concepts of chemistry. Readers build 3-D models of molecules and create a periodic table guessing game. Fascinating sidebars offer opportunities for readers to connect the text with real-world science, and cartoon illustrations provide a fun foundation for learning.

This is a detailed 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. Key terms, easy experiments, and clear illustrations guide students through subatomic explorations. A chapter about Niels Bohr and his model for the atom honors his contribution to the understanding of atomic structure. Tools and techniques, such as a scanning tunneling microscope, Rutherford's gold foil experiment, and a mass spectrometer, help readers to gain a comprehensive understanding of atoms and molecules.

The present theme concerns the forces of nature, and what investigations of these forces can tell us about the world we see about us. The story of these forces is long and complex, and contains many episodes that are not atypical of the bulk of scientific research, which could have achieved greater acclaim 'if only...'. The intention of this book is to introduce ideas of how the visible world, and those parts of it that we cannot observe, either because they are too small or too large for our scale of perception, can be understood by consideration of only a few fundamental forces. The subject in these pages will be the authority of the commonly termed, laws of physics, which arise from the forces of nature, and the corresponding constants of nature (for example, the speed of light, c, the charge of the electron, e, or the mass of the electron, me).

Atoms, Molecules, and Compounds goes behind the scenes of day-to-day chemistry to explore the atoms that govern chemical processes. In clear language, this exciting book shows how the interactions between simple substances such as salt and water ar

Find out all about atoms, what they are and where they come from - and how these tiny particles combine to make up EVERYTHING in the universe (including you). Packed with intriguing facts, this is an entertaining and accessible introduction to key scientific ideas. Part of Usborne's bestselling "See Inside" lift-the-flap non-fiction series, which includes over 40 titles. With beautiful full-colour illustrations and fascinating details to discover on every page. Written in consultation with an expert chemist.