Unit 4: Toxins
- Chapter 13: Toxic Changes
- February 5: Flint Water Crisis Reading / Initial Model
- February 6-7: Lesson 68 – Chemical Equations
- February 8: Lesson 69 – Observing Change Lab
- February 9: Lesson 70 – Physical vs Chemical Change
- February 12: Lesson 72 – Balancing Chemical Equations
- February 13: Homework Review Day
- February 14: Lesson 73 – Types of Reactions
- February 15: Chapter 13 Review
- Chapter 14: Measuring Toxins
- February 20: Unit Conversion
- February 21-22: Lesson 74 – Toxicity
- February 23: Counting by Weighing
- February 26: Moles and Molar Mass
- February 27: Lesson 79 – Comparing Amounts
- February 28 – March 1: Chapter 14 Review
- March 2: Chapter 13-14 Quiz
- Chapter 15: Toxins in Solution
- March 5: Hunting the Elements (part 1)
- March 6-8: Lesson 80 – Solution Concentration
- March 7: SAT (11th grade)
- March 8: Discussion / Revise Initial Model
- March 12: Lesson 81 – Molecular Views
- March 13: Lesson 82 – Preparing Solutions
- March 14: Hunting the Elements (continued)
- March 15-16: Lesson 83 – Mystery Solutions
- March 19-21: Chapter 15 Review
- March 22: Chapter 15 Quiz
- March 23: pH Analysis Gizmo
- Chapter 16: Acidic Toxins
- March 26: Lessons 84 – Acids and Bases
- March 27: Lesson 85 – Acid and Base Theory
- March 28-29: Homework Review
- March 30: Calculating with Exponents
- April 2-6: Lesson 86 – [H+] and pH
- April 16: Lesson 88 – Neutralization Reactions
- April 17-18: Lesson 89 – Titration
- April 19-23: Chapter 16 Review / Lab Reports
- Unit 4 Wrap-Up
- April 24-25: Unit 4 Review
- April 26: Unit 4 Exam
- April 27: Cosmos Episode 7 – The Clean Room