Details Title: A&P Description: Chemistriy of Life Chapter 2 Total Flash Cards: 19 Created: 01/11/2009 20:24:27		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Medical Flashcards
Cards in this set: Term Levels of chemical organization are Definition Atoms,elements, molecules , and compounds Term Nucleus Definition central core of atom Term Proton Definition positively charged particle in nucleus Term Neutron Definition non-charged particle in nucleus Term Atomic mass Definition number of protons in the nucleus determines the type of atom Term Energy Levels Definition regions surrounding atomic nucleus that contain electrons Term Electron Definition negatively charged particle Term Energy levels contain what Definition up to eight electrons in each level Term energy levels increases with Definition distance from nucleus Term Element Definition a pure substance made up of only one kind of atom Term Molecule Definition a group of atoms bound together in a group Term compound Definition substances whose molecules have more than one kind of atom Term Chemical bonds Definition form to make atoms more stable Term Chemical bonds outermost energy level of Definition each atom when full Term Atoms may share Definition electrons or donate or borrow them to become stable Term Ions form Definition when an atom gains or loses elecrons in its outer energy level to become stable Term Positive ion Definition has lost electrons indicated by superscript positive sign(s) as in Na+ or Ca++ Term Negative ion Definition has gained electrons indicated by superscript negative sign(s)as in CI- Term Ionic bonds form when psositive and negative ions attract each other because of Definition Electrical attraction