Helium.com | Chemistry | Atoms: An overview http://www.helium.com/knowledge/4799-atoms-an-overview.xml Helium.com > Chemistry > Atoms: An overview en-us Copyright Helium.com Mon, 05 May 2008 19:39:55 GMT Mon, 05 May 2008 19:39:55 GMT Atoms are the smallest units of a particular element that still retain all the properties of that element. The basis of chemistry involves the inte... http://www.helium.com/items/1653564-an-overview-of-atoms Tue, 17 Nov 2009 14:43:38