Atomic Structure and Chemical Bonding - SCH 3U

Look below table for a day by day class activities:

LINK TO MASS SPECTROMETER WEBPAGE

LINK TO PERIODIC TABLE OF LINE SPECTRA

LINK TO EXCELLENT SOLAR SPECTRA

LINK TO RUTHERFORD GOLD FOIL SCATTERING SIMULATION (and other "phet" simulations)

ATOMIC PROPERTIES (GRAPHS AND PICTURES)

• please carefully look at classification of matter according to bonding
  • please note that the instructions in this note could be though of as a flow chart
  • the easy stuff is at the top (I have often referred to this a "LOW HANGING FRUIT" which is a term that means do the easy stuff first)
  • this means get the ionic, metallic and covalent network solids out of the way first (pick the low hanging and easy to get fruit first)
  • the only covalent network solids you will see in this course are diamond and quartz - you would need to remember this, accept that this course will be open book from now on!
  • the hard stuff is the discrete covalent molecules
  • could be non-polar
    • difference in electronegativity between atoms is less that 0.5 and therefore non-polar
    • non-polar due to symmetry
  • could be polar
    • difference in electronegativity is greater than 0.5
    • geometry allows for a net molecular polarization
  • CO₂ is technically non-polar due to symmetry, but has regions of charge that make it have some of the characteristics of polar - sometimes is classified as both non-polar and polar
• without looking at the answers on the second page, try to complete this classification
• check your answers
• look at the test question #3 on the second page of physical properties test (answers) and complete this question as best as you can
• chech your answers

This completes this unit.  If you are interested in further study (good for the nerds!), you could look carefully through the notes on metallic bonding, macromolecules vs discrete covalent, physical properties explained (annotated). The annotated version is what you want to look at.  It has comments in place.  Then carefully read through types of compounds table and finally complete the questions on physical properties (answers).  This covers all of the material that can be found on the physical properties test (answers). This material is difficult, particularly without the sort of interaction possible in a classroom.  Normally, I would spend five days on this.  You are not responsibile for this material under our current circumstances

• held quiz similar to bonding quiz (answers) - SEE MAIN PAGE FOR DETAIL REGARDING LEARNING AT HOME

• completed all aspects of ionic bonding, covalent bonding and bond polarizations (alternate bonding note)
• announced quiz tomorrow that will be similar to bonding quiz (answers) - GOOD  LUCK !!!!

• further examples of covalent bonding similar to those found in ionic bonding, covalent bonding and bond polarizations (alternate bonding note)
• introduced the difference in electronegativity calculation as a second method of determining if a pair of atoms will form an ionic or a covalent bond - see ionic bonding, covalent bonding and bond polarizations (alternate bonding note)
• continued working on BONDING WORKSHEETS (ANSWERS) - PLEASE COMPLETE UP TO THE END OF SHEE #3 FOR HOMEWORK

• started note similar to ionic bonding, covalent bonding and bond polarizations (alternate bonding note) up to half way through covalent bonding
• wrote part of a note similar to lewis dot diagrams
• started working on the first and second page of BONDING WORKSHEETS (ANSWERS)

• completed observations for combustion in pure oxygen observations
• reviewed questions #10 and 11
• looked at last page in oxidation states and relative reactivity

• went through the remaining portions of the example format to explain how to answer question #3 on RELATIVE REACTIVITY LAB QUESTIONS
• went through the infomation found on the 4th page of oxidation states and relative reactivity
• worked on questions #1,2,3 and 6,7 from RELATIVE REACTIVITY LAB QUESTIONS - SHOULD COMPLETE THIS WEEKEND

• completed observations for reactivity of metals in acids observations

• looked at alternative periodic table layout for interest sake
• went through not one oxidation states and relative reactivity up to the end of the third page
• looked at example format (go through the pages) up to the end of the fifth page

• looked at various things that have been handed back
• completed observations for reactivity of metals in water observations

• held quiz on quantum package filled out (periodic table good version) and quiz similar to electron configuration, octet rule and periodic table quiz (answers)

• completed looking through and completed filling out octet rule (filled out)
• looked at electron configuration, octet rule and periodic table quiz (answers) and commented on the tricks to getting perfect!
• went through note on reactivity definitions and atomic properties
• started working on atomic properties graphing assignment (answers to questions) using "good" graph paper (please pick up three sheets from class - DUE MONDAY

• handed in Bohr Model of the Atom Assignment
• completed quantum package filled out (periodic table good version) including the last page on electron configurations
• filled out first page of octet rule (filled out)
• completed octet rule explained (filled out)
• filled out table on second page of octet rule (filled out)

• answered questions about the Bohr Model of the Atom Assignment  - DUE TOMORROW
• worked through most of quantum package filled out (periodic table good version) - QUIZ WEDNESDAY

• did a quiz similar to formula quiz (answers)
• worked on questions from Bohr Model of the Atom Assignment - DUE IN ROUGH ON MONDAY
• please see New Link for Question #7 for question #7 and please see LINK TO PERIODIC TABLE OF LINE SPECTRA for easy access to line spectra for all elements

• carefully went through the notes on electromagnetic radiation and Bohr model of the atom
• carefully explained the process required to take a blank hydrogen atom diagram and through a progression come up with a complete diagram that tries to explain why a line spectra is observed
• started working on the Bohr Model of the Atom Assignment - DUE TUESDAY FEBRUARY 25

• answered questions on combustion of magnesium lab
• completed reading through models of the atom part 2
• filled in visual observations for line spectra of five elements using line spectra recording template

• completed all questions from formula calculations worksheet (answers may need proofreading)
• read pages 34 to 39
  • do #1 to 5 page 39
• read pages 40 to 47

• went through the first two examples on empirical and molecular formula calculations - see above for more detailed descriptions
• worked on formula calculations worksheet (answers may need proofreading) - should complete first four questions

• went through various aspects of  how to do a good lab report for the combustion of magnesium
• this included looking at the calculation seen in percent composition calculations as well as the information found in side reaction of magnesium

• completed all part of the combustion of magnesium lab and filled out combustion of magnesium lab data sheet
• handed out a copy of lab write-up instructions , combustion of magnesium calculations and questions and magnesium lab report evaluation
• LAB REPORT DUE WEDNESDAY FEBRUARY 19TH

• looked at most of the remaining  material in models of the atom part 2
• started preparing for the combustion of magnesium lab

• held quiz similar to quiz average atomic mass calculation (answers) and marked in class (requiz available during lunch Monday - Wednesday next week)
• finished talking through models of the atom part 1
• looked at the first paragraph only in models of the atom part 2 and started a demonstration related to the discovery of the electron

• took up questions from Tuesday
• reminder of quiz average atomic mass calculation (answers) TOMORROW
• started to go through models of the atom part 1

• demonstration of geiger counter
• went through not on isotopes and average atomic mass calculations
• went through an average atomic mass calculation
• worked on average atomic mass calculations using isotopic mass tables
• QUIZ ON FRIDAY - SEE quiz average atomic mass calculation (answers)

• did quiz 20 elements (answers)
• did atomic symbols worksheet -- (answers)
• went through note on radioactive decay processes
• completed and took up radioactive decay worksheet (answers)
• handed out textbook
• completed radioactive decay worksheet (answers)
• COMPLETE FOR HOMEWORK:
  • read section 4.4 pages 142 to 147
  • do # 29, 30, 31, 32 pg 143
  • do # 33, 34, 35 pg 144
  • do # 36, 37, 38, 39 pg 147
  • do section review # 1, 2, 3, 4, 5 pg 148 - PLEASE COMPLETE FOR HOMEWORK
  • you will notice that the last question on each page is a bit more of a challenge

• ANNOUNCED QUIZ TOMORROW - SEE quiz 20 elements (answers)
• looked at note on subatomic particles and filled in the blanks