Before we dive too deeply into pH, we take today to brush up on unit conversion and scientific notation using the Unit Conversions 2 – Scientific Notation and Significant Digits Gizmo. Students who needed additional time and/or help with homework had the opportunity to work in small groups and with the teacher. At the end of class, students who want the opportunity to re-take the chapter 15 quiz received the Chapter 15 Quiz Retake Ticket as homework. The packet requires students to show their work as they solve problems and **the packet must be completed correctly before students may retake the quiz**. Students who want to retake the Chapter 15 quiz must do so after school on Monday, April 2.

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