Helium.com | Chemistry | What is an atom? http://www.helium.com/knowledge/87198-what-is-an-atom.xml Helium.com > Chemistry > What is an atom? en-us Copyright Helium.com Tue, 01 Sep 2009 00:40:11 GMT Tue, 01 Sep 2009 00:40:11 GMT An atom is the smallest unit of a particular element. The basis of chemistry comes down to the interactions between atoms. More specifically, it in... http://www.helium.com/items/1653560-what-is-an-atom Tue, 17 Nov 2009 14:41:07