For our introductory lesson of Unit 4, we revisited the concepts of physical and chemical change in the context of chemical reactions. The lesson began with a demonstration in which students were presented with a chemical equation, observed the chemical reaction, and then were challenged to prove whether the predicted product could be observed. The demonstration led to a discussion of physical and chemical change via the Lesson 70 PowerPoint which includes an image of the following reaction: Cobalt (II) chloride (a solid with a rich blue color) + water (clear liquid) reacts to form a pink liquid. Students had the remainder of the class period to complete the Lesson 70 Worksheet. Class notes are shown below:
Extend Your Learning!
- Read Lesson 70 in the textbook. Login via hs.saplinglearning.com and enter your username and password:
- Username: wahps****s-####### (**** = first 4 letters of your last name and ####### = student number). Remember to include the dash between s and #.
- Password: S-####### (the S must be capitalized)
- Work through the practice problems at the end of Lesson 70.
- Please ask questions about anything from Lesson 70 you do not yet fully understand.
Opportunities For Help Outside of Class:
- Mr. Swart’s office hours: Mondays, Tuesdays, and Thursdays after school until at least 3:00 (later with advanced notice)
- Use the vast number of resources available on this website – check each lesson!
- Email Mr. Swart for help if staying after school is not possible
- Form a study group with other students to review concepts from class
- Attend MASH after school (M/T/Th in Library)
- Attend Math Lab after school (T/Th in Room 124)