Atom definition (chemistry glossary), Atom definition. an atom is the defining structure of an element, which cannot be broken by any chemical means. a typical atom consists of a nucleus of protons and. Chem4kids.: atoms: structure, Chem4kids.com! this tutorial introduces atomic structure in chemistry. other sections include matter, elements, the periodic table, reactions, and biochemistry.. How atoms work | howstuffworks, But what exactly is an atom? what is it made of? what does it look like? the pursuit of the structure of the atom has married many areas of chemistry and physics in.
Oxygen () - chemical properties, health environmental, Oxygen. gaseous chemical element, symbol: , atomic number: 8 atomic weight 15,9994. ’ great interest ’ essential element . http://www.lenntech.com/periodic/elements/o.htm Oxygen facts - air, gas, atom, , properties, water, Oxygen facts. enjoy interesting oxygen facts learn relates air breathe, water, ozone layer .. http://www.sciencekids.co.nz/sciencefacts/chemistry/oxygen.html Atom - wikipedia, An atom smallest constituent unit ordinary matter properties chemical element. solid, liquid, gas, plasma composed neutral. https://en.wikipedia.org/wiki/Atom