Lesson 5
Polarity and Attractive Forces
Learning Intention: Justify the polarity of a molecule and how that influences melting/boiling points of molecular solids.
Success Criteria
4. I can justify the polarity of a molecule.
A = State areas of electron density affect shape/polarity, states number of regions of electron density, states electronegative difference affects polarity.
M = If given two molecules, explains the shape and polarity of one OR shape or polarity for both. If given one molecule explains shape and polarity with minor omission/error.
E = If given two molecules, explains the shape and polarity for BOTH with comparison. If given one molecule, full justification of shape and polarity with no errors or omission of info.
6. I can explain a heating curve.
A = Identify that in a heating curve, the particles gain kinetic energy/move faster or that energy is absorbed to break intermolecular forces.
M = I can link kinetic energy and particle movement or explain why the temperature doesn’t change during melting or boiling.
E = I can fully explain a heating curve.
7. I can compare melting point/boiling point of particles using attractive forces between them.
A = name the specific intermolecular forces present, rank intermolecular forces
M = explains the ranking of one of the particle’s melting/boiling point.
E = explains all molecules melting/boiling points with comparison.
Learning Tasks
Do Now - Complete the Week 9 Check-In on the memo paper. Random Question: Since it's post senior assessment week, what was something positive you learned from the week (aka something you are actually better at than you thought you were) and what's a take away lesson that you have learned?
Complete the following sciPAD pages as pre-learning. Remember, you don't need to complete all the pages or questions, just do what you need until you understand the material. In fact, Ms Garlick is happy if you just read the notes from these pages.
Covalent Bonds (page 39)
Polarity of Molecules - Level 2 Recap (page 40)
Polarity of Molecules - Expanded Octet (page 41-44)
Copy down Ms Garlick's notes on polarity.
Complete the following sciPAD pages as pre-learning. Remember, you don't need to complete all the pages or questions, just do what you need until you understand the material. In fact, Ms Garlick is happy if you just read the notes from these pages.
Temporary Dipole-Dipole Attractions (page 47)
Factors Affecting the Strength of Temporary Dipoles (page 48)
Shape (page 49)
Permanent Dipole-Dipole Attractions (page 50)
Hydrogen Bonding (page 51-54)
Solubility (page 55)
Copy down Ms Garlick's notes on attractive forces.
Mahi Choice
Work on sciPAD pages listed in task 2 & 4
Work on the No Brain Too Small Shapes Collated Questions
Work on the No Brain Too Small Attractive Forces Collated Questions
Work on "CPR" Quiz #2 - Shapes, Polarity (Answers) and "CPR" Quiz #3 - Attractive Forces (Answers)
<--- I didn't get quite enough time in class to explain the heating and cooling curves, but I did cover it in my Level 1 Science Academy class, so you can watch it there if you need more help with it.
Homework
Finish the two quizzes
This lesson took place on Monday, September 16th, 2024, Term 3, Week 9, which is when this page was last updated.
Teacher Notes
Note that I would have preferred to do this as two lessons but ran out of time.