We continued our learning of gas laws by taking the combined gas law and adding in the concept of the mole to account for the number of particles contained within a sample of gas. We began with class notes (pictured below). Then, students were assigned to read Lesson 64 of our textbook: The Mole and Avogadro’s Law. Students then worked in groups of 3-4 to complete the Exercises at the end of Lesson 64 (responses due by the end of class). The Lesson 64 PowerPoint is provided for reference material. To conclude the class period, students received back their quiz from last Thursday.

For day 2 of this lesson, students were greeted with an Ideal Gas Law entry task (solutions pictured below) which consumed the majority of the abbreviated class period.

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For days 3 and 4 of this lesson, students were first tasked with completing the Lesson 64 Exercises from Tuesday, then working on the Moles Gizmo.

Additionally, students received a paper copy of Ideal Gas Law Practice Problems (pages 1-2 of the linked document). Click the link and scroll to page 3 for the solutions to check your work.

**Notes from class:**

**Extend Your Learning!**

Interested in how scientists calculated the number of particles in one Mole? Read about it at Wired Magazine.

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