Atoms, Ions, Numbers, and Stability Test
HINT SHEET
This exam will be the largest test you have taken in chemistry so far. At this time, there are 40 multiple choice questions and 8 free response. Questions are similar to those from recent worksheets and class activities. Note: There is no unit factoring on this exam. It is all content.
KNOW!
 Know the charges of each: proton, neutron, electron
 Know the mass of each: proton, neutron, electron
 Know the location of each: proton, neutron, electron
 Know two ways to find mass
 Know how to calculate charge
 Know trends in ion formation in the periodic table

Know and understand the terms
 electron shell
 valence
 stable
 octet
 atomic number
 atomic mass
 ion
 atom
 charge
 neutral
 Lewis dot model (aka electron dot model)
 Bohr model
UNDERSTAND
Everybody wants to be like a noble gas!
DO
 Be able to construct a Lewis dot (aka electron dot) model
 Be able to interpret a Lewis dot (aka electron dot) model
 Be able to construct a Bohr model
 Be able to interpret a Bohr model
 Be able to calculate mass
 Be able to calculate charge
 When given partial information, be able to deduce other information
 Evaluate particles for stability or instability
 Be able to fully explain why atoms form ions using all 4 parts learned in class
**For diagrams and visual reminders, please check the review sheet passed out in class on 11/13/12. Technical limitations prevent uploading the images on this site.