Students use the terms isotope, atomic number, mass number, and atomic mass. Atomic Theory: Structure of the Atom: Students use the terms isotope, atomic number, mass number, and atomic mass to ...

Dalton’s Atomic Theory: British physicist, chemist, and meteorologist John Dalton proposed Dalton’s atomic theory in the year 1808. This was the first theory that studied the matter in the form of ...

The present writer has briefly discussed the history of this law, in NATURE, vol. 1. 1894, p. 149. In two unappreciative lines in a footnote to the “Elements of Chemical Philosophy,” published in 1812 ...

In what's being hailed as an important first for chemistry, an international team of scientists has developed a new technology that can selectively rearrange atomic bonds within a single molecule. The ...

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 ...

Every field of science has its favorite anniversary. For physics, it’s Newton’s Principia of 1687, the book that introduced the laws of motion and gravity. Biology celebrates Darwin’s On the Origin of ...