Explore: Atom Concentration

diffusion of metal atoms. The vacancy concentration represents availability of empty lattice sites, which might be occupied by a migrating atom. At the end of

Atoms are the basic particles of the chemical elements and the fundamental building blocks of matter. An atom consists of a nucleus of protons and generally

approximation, the concentration of ozone in the stratosphere. It includes four processes - and a fifth, less important one - all involving oxygen atoms and molecules

Atom Eve (Samantha Eve Wilkins) is a fictional superheroine in the Image Universe, first appearing in Invincible #2 (February 2003) by writer Robert Kirkman

cells" in response to the stomach chyme containing high hydrogen atom concentration (high acidity), is released into the blood stream; upon return to

nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to

of the material, there is an equilibrium concentration (ratio of vacant lattice sites to those containing atoms). At the melting point of some metals the

of only two atoms, of the same or different elements. diffusion The net movement of atoms or molecules from a region of higher concentration to a region

diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric

typically meant the number of atoms in a given volume. Modern chemists prefer to use the concept of molar concentration. In 1913, Antonius van den Broek