Combined Gas Law

Having thoroughly explored gas laws involving two variables (Pressure & Volume, Pressure & Temperature, and Temperature and Volume), students were introduced to the Combined Gas Law, k=PV/T, at the end of class yesterday.  We began class with the video below:

Next, students received a copy of a handout designed to accompany the Deriving the Gas Laws activity packet from yesterday.  Students worked with their table partners to review, model, and explain the lab data.  The handout, due at the end of class, included a combined gas law practice problem.  Students had the remainder of the class period to:

  • Read Lesson 61 in the textbook and work through the practice exercises (assigned yesterday)
  • Complete the Lesson 61 worksheet handed out yesterday (due tomorrow, February 21)
  • Read Lesson 64 in the textbook and worth through the practice exercises.

We spent an extra day working through Combined Gas Law problems (class periods were short as a result of the Curriculum Fair).  We reviewed a few problems from the table on th efront of the Lesson 61 Worksheet, and we also worked through question 7 from a handout of additional Gas Law practice problems.  Class notes are shown below:

Example of volume solved at 5,000 ft from the L61 WS table
Explanation of Q8 from L61 WS


  • Read Lesson 64 in the textbook.  Login via 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 64.
  • Please ask questions about anything from Lesson 64 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  and meet regularly to review  concepts from class (meet in person, online, by phone, social media, etc)
  5. Attend MASH after school
  6. Attend Math Lab after school

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