Thank you for bringing to my attention the recent International Union of Pure & Applied Chemistry report “Atomic weights of the elements 2009” (C&EN, Dec. 20 ...

For the first time those little numbers that appear beneath some of the commonest elements in the periodic table boxes are about to change from a single value to an interval of numbers An ...

Chemists use symbols and formulae to represent elements and compounds. Word equations and balanced chemical equations represent the changes that happen in chemical reactions. Mixtures - AQA There are ...

The relative atomic masses of elements are proportional measures. For example, the Ar for helium is 4.0, and the A r for carbon is 12.0. This means that carbon atoms have three times the mass of ...

Long before mass spectrometry became an important tool for cell biology, it was yielding scientific insights in physics and chemistry. Here is a brief history of how the technology has expanded from a ...

Is there a way for me to type equations for nuclear chemistry or math equations on Word so they look like<BR>View image: http://home.mindspring.com/~ops21/atom.jpg ...