Exam 3 Study Guide - Preparatory Chemistry | CH 111, Study notes of Chemistry

Download Exam 3 Study Guide - Preparatory Chemistry | CH 111 and more Study notes Chemistry in PDF only on Docsity! Exam  3  Review  Sheet     What  You  Must  Bring   -­‐ Pencils  and  eraser   -­‐ Calculator  (you  will  not  be  allowed  to  use  your  phone  and  I  don’t  have  extra   calculators)   -­‐ Picture  ID     General  Comments   The  exam  will  contain  30-­‐35  multiple-­‐choice  problems.  You  will  be  provided  with  a   periodic   table  with  symbols  as  well  as   full  names  of  elements.    Make  sure  you  are   comfortable  with  balancing  equations,  writing  formulas  from  names,  stoichiometry,   solving  problems  and  Lewis  structures.         Information  Provided  on  Exam   Periodic  Table   PV=nRT   R  =  0.0821  L⋅atm⋅mol-­‐1⋅K-­‐1   Any  needed  conversion  factors  for  pressure  units     Preparation   You  should  prepare  by  working  out  all  of  the  problems  we  did  in  class,  Sapling  and   suggested   end-­‐of-­‐chapter   problems.     You   should   focus   on   understanding   specific   language  and  symbols  used  as  well  as  developing  a  strategy  for  word  problems  and   drawing  Lewis  structures.    As  a  final  check  of  your  knowledge  you  should  select  25-­‐ 30   problems   from   your   text/Sapling/lecture   and   give   yourself   ~45   min   to   work   them  out  without  the  use  of  your  book  or  notes.    Putting  yourself  under  test-­‐taking   conditions  will  give  you  a  better   idea  of  what  topics  you  are  comfortable  with  and   what  topics  you  may  need  more  practice  with.                 Chapter  10   - Lewis  structures  for  molecules  and  polyatomic  ions  where  atoms  obey  the   octet  rule  as  well  as  noted  exceptions  (electron  deficient  and  expanded  octet   examples)   - Know  what  resonance  forms  are  and  recognize  molecules  that  require   resonance  forms  to  show  bonding   - Determine  molecular  shape  using  VSEPR   - Know  approximate  bond  angles  predicted  by  VSEPR   - Identify  molecular  and  ionic  compounds  from  formula   - Electronegativity  trends  and  bond  polarity   - Determining  if  molecule  is  polar  or  non-­‐polar