BSC 2010 exam 1 (UCF) Exam Review Questions and answers, rated A+| LATEST EXAM UPDATES|

BSC 2010 exam 1 (UCF) Exam Review Questions and answers, rated A+ Elements - Something that can't be broken down any further by chemical reactions The big 4: make up 96% of living matter? - 1. Carbon ( C) 2. Hydrogen (H) 3. Oxygen (O) 4. Nitrogen (N) Atom - smallest unit of matter retaining properties of a given element Dalton - measure of mass for atoms Subatomic particles - Atoms of different elements differ in # of subatomic particles Like neutrons , electrons, Protons Main 3 subatomic particles? - Neutrons (0), protons (+), electrons (-) Atomic number - The number of protons in an atom Mass number: approximation of atomic mass - # of neutrons + # of electrons = mass # - approximation of atomic mass Number of neutrons + number of electrons =???? - Mass numbe