Exam 2 Study Guide - Preparatory Chemistry | CH 111, Study notes of Chemistry

Download Exam 2 Study Guide - Preparatory Chemistry | CH 111 and more Study notes Chemistry in PDF only on Docsity! Exam  2  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.    It  is  fairly  impossible   to  completely  de-­‐couple  information  from  Ch  1-­‐5  from  material  being  tested  on  this   exam.    For  example  you  are  still  expected  to  know  the  terms  and  labels  used  in  the   periodic   table   and   SI   unit   conversions.     Therefore   do   not   assume   you   can   forget   what  we  did  before  Ch6.       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.    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  6   - Avogadro’s  number:  what  it  represents  and  its  value  and  units  (you  will  not   be  provided  with  this  value)   - Molar  mass  (obtained  from  periodic  table,  has  units  of  g/mol)   - Conversions  between  moles  and  number  of  particles  (atoms,  molecules,  ions,   etc.)   - Conversions  between  grams  and  moles   - Using  mole/mole  ratios  from  formula  as  conversion  factor   - Combined  problems  with  both  gàmolà#  and  mole/mole  ratios   - Mass  percent  from  formula  (equation  not  provided)   - Empirical  formula  from  mass  percent  or  experimental  data  (equation  not   provided)   - Molecular  formula  from  empirical  formula  and  molar  mass  (equation  not   provided)