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

<--- 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