Sept. 2 (UPI) --Scientists in Japan have developed a new way to measure the energy difference of an atom and a molecule. The new algorithm, described Thursday in the journal Physical Chemistry ...

An electron scanning micrograph of the molecule-weighing device. When a molecule lands on the bridge-like portion at the center, it vibrates at a frequency that indicates its mass. Image via ...

Chemists have calculated the structure of a very unusual molecule, one whose hyperactive atoms have earned it the nickname "the scrambler." This highly caustic "protonated methane," or CH5+, is also ...

Researchers have found a simple way to construct and deconstruct molecular metal chains, atom-by-atom. Electronic devices are getting smaller and smaller. Early computers filled entire rooms. Today ...

Mass spectrometry provides rapid and quantitative identification of protein species with relatively low sample consumption. The trend towards biological analysis at increasingly smaller scales, ...

Most of the units we rely on are based on precision microscopic measurements—regular fluctuations in certain atoms define one second of time, for example. A major exception to this is the basic unit ...

Single-atom catalysts (SACs), with their excellent metal atom utilization and unique physicochemical properties, hold promise for broad applications, especially in heterogeneous catalysis and energy ...

For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges. The mass number of an atom is its total number of ...