Chapter 2
Atoms and Elements

The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all…

Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller…

In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element —…

As early chemists discovered more elements, they realized that various elements could be grouped by their similar chemical behaviors. One such…

A quick, automated and portable system for the separation and determination of radiostrontium in aqueous samples, using Sr-resin and multi sequential…

Electrospray ionization (ESI) can transfer an aqueous-phase peptide or peptide complex to the gas-phase while conserving its mass, overall charge,…