Balancing Chemical Equations

Class began with the ChemCatalyst from the Lesson 72 PowerPoint.  With the lesson focusing on balancing chemical equations, we worked through the ChemCatalyst equation with a focus on differentiating coefficients and subscripts (slides 11 and 12).  We used the remainder of the class period to practice balancing equations.

Notes from the whiteboard:

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Extra Practice!

For students who would like additional instruction around balancing equations and enjoy learning by watching videos, I recommend Tyler DeWitt’s videos Introduction to Balancing Equations (above) and Balancing Chemical Equation Practice Problems (below):

Homework:

  • Read Lesson 72 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 72.
  • Please ask questions about anything from Lesson 72 you do not yet fully understand.

Opportunities For Help Outside of Class:

  1. Mr. Swart’s office hours: Mondays, Tuesdays, and Thursdays after school until at least 3:00 (later with advanced notice)
  2. Use the vast number of resources available on this website – check each lesson!
  3. Email Mr. Swart for help if staying after school is not possible
  4. Form a study group with other students  to review concepts from class
  5. Attend MASH after school (M/T/Th in Library)
  6. Attend Math Lab after school (T/Th in Room 124)
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Conservation of Mass

We briefly reviewed the Lesson 71 PowerPoint and then students had the remainder of the class period to work in groups to complete the lab described on the Lesson 71 Worksheet.

Notes from the whiteboard (lab stations):

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Homework:

  • Read Lesson 71 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 71.
  • Please ask questions about anything from Lesson 71 you do not yet fully understand.

Opportunities For Help Outside of Class:

  1. Mr. Swart’s office hours: Mondays, Tuesdays, and Thursdays after school until at least 3:00 (later with advanced notice)
  2. Use the vast number of resources available on this website – check each lesson!
  3. Email Mr. Swart for help if staying after school is not possible
  4. Form a study group with other students  to review concepts from class
  5. Attend MASH after school (M/T/Th in Library)
  6. Attend Math Lab after school (T/Th in Room 124)

Physical versus Chemical Change

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:

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Extend Your Learning!

Homework:

  • 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:

  1. Mr. Swart’s office hours: Mondays, Tuesdays, and Thursdays after school until at least 3:00 (later with advanced notice)
  2. Use the vast number of resources available on this website – check each lesson!
  3. Email Mr. Swart for help if staying after school is not possible
  4. Form a study group with other students  to review concepts from class
  5. Attend MASH after school (M/T/Th in Library)
  6. Attend Math Lab after school (T/Th in Room 124)

Hunting the Elements

With half of our students taking the SAT on Wednesday and Thursday’s attendance impacted by the light snow we received Wednesday evening, we invested our class time in finishing Hunting the Elements and then students were offered the opportunity to earn 5 bonus points on their Unit 3 Exam.  To earn bonus points, students need to complete the model depicted below and write an explanation about what is happening to the drum (focusing on temperature, pressure, and volume in the before, during, and after parts of the experiment).  Watch the video below between 1:44 and 3:18 for the experiment.  Have fun!