Category Archives: Chemistry 11

Periodic Trends – Atomic Radii, Ionization Energy, Electronegativity

  1.  Using the principles of attraction and repulsion, I will be able to explain the patterns of atomic radii, ionization energy, and electronegativity as you move down a group (top to bottom) or across a row (left to right).  See notes from block 3 here:  Periodic Trends or notes from Block 4 here:  Warm Up Periodic Trends
  2. Do:  Finish the worksheet “Periodic Trends”.  See copy of it on last day’s blog.
  3. Do:  #48. 49. 51. 53 in your workbook.
  4. Some good videos:



Sec 8.1 Quest and Periodic Table Trends cont’d

  1.  Students wrote the Qu-est for section 8.1 today.
  2. Go over “Coulombic Attraction” Worksheet answers.
  3. Do:  Periodic Trends Worksheet.  See copy here:  15 Periodic Trends-S
  4. Note:  Goal Day is coming up on May 2.  Anything you need to complete from the beginning of Term 3 to May 2 must be completed by May 2.  If you were absent for a test, you will write it during morning of May 2 from 9-10am.  If there is a conflict, let me know asap.

Coulombic Attraction

  1.  Warm Up! – some practice questions similar to the upcoming Quest
  2. Reminder: Quest on section 8.1 on Monday.  It will focus on the parts of the atom, calc the average atomic mass, and writing/drawing electron configurations (full, core, arrow)
  3. I will be able to explain the periodic table trends using 2 key concepts:  attraction and repulsion.
  4. Do:  Coulombic Attraction Worksheet.  See copy here:  11 Coulombic Attraction-S



Periodic Table

  1.  Go over 2 worksheets from last class.
  2. I will be able to explain how the Periodic Table is organized.
  3. Video:

4.  Read section 8.2 and do Q#30-39

5.  Note:  Qu-est on Monday on all sections up to last class.

Quantum Electron Configuration Exceptions

  1.  Warm Up!
  2. I will be able to write the electron configurations of ions.
  3. I will be able to recognize and write the electron configurations of atoms that are exceptions to way we normally write electron configurations.
  4. I will be able to draw electron configurations using arrows.
  5. Do:  #28-29
  6. Next class:  you will have an in-class assignment (it is in the booklet I gave you today–make sure you bring it!)

Bohr’s Model of the Atom

  1.  Activity:  Looking at Spectral Lines – What do they mean???  How did Bohr interpret them and come up with his model of the atom?
  2. I will be able to determine the number of protons, neutrons, and electrons in an isotope or ion.
  3. I will be able to determine the average atomic mass of an element.
  4. Read up to around p.150 and do questions along the way.  Suggested questions:  #19, 22, 23.
  5. After Spring Break, we will have another seating plan change.  Come early to pick your seats!  We will also continue our story with the Quantum model of the atom (p151-158).  Feel free to read ahead and to watch the videos posted on last day’s blog.

Intro to Unit 8

  1.  I will be able to explain how the atom has changed over time.
  2. Read section 8.1.  Highlight, underline your text as you read.  Organize the information (suggestions:  make a timeline, make speech bubble notes, make cue cards, etc….)