Lesson 3.3: Bond Energies, Hess's Law & Enthalphy of Formation
Learning Goals:
- I will be able to use average bond energies to estimate the enthalpy change for a chemical reaction.
- I will be able to apply Hess's law to determine the enthalpy change for a chemical reaction.
- I will be able to use enthalpies of formation to determine the enthalpy change for a chemical reaction.
Specific Expectations:
NELSON Text Reference: Section 5.3, 5.4, 5.5
TASKS:
***Reminder to log your activities of this lesson in your current Unit Time Log Sheet.
- Study key terms in Glossary 3.3 and do Glossary Quiz 3.3
- Study Bond Energy Example and Enthalpy of Formation Example
- Watch Hess's Law video lesson from the Unit 3 Video Lessons.
- Read Section 5.3 (STOP reading at the bottom of page 308. Use the example calculations presented in the video lesson and summary as a guide, NOT the examples given on pages 309 to 312), Section 5.4 and Section 5.5 in the textbook and write down any notes for yourself.
- Complete and submit Assignment 3.3. You can find a table of average bond energies in your Information Package
- Check your solutions and review as necessary.
- Complete Exit Card 3.3
Glossary Quiz 3.3
Assignment 3.3
Textbook Section 5.3: pg313. #1ab, 2a, 3
Section 5.4: pg317. #1a, 2a, 3
Section 5.5: pg324. #1, 2d, 4ANSWERS TBp313 1ab 2a 3 File
Exit Card 3.3 Questionnaire
Students to complete this after you've finished all activities/tasks in this lesson in order to move on to the next lesson.