After the modified lock-down this morning impacting class times, out of fairness to all of my students, I decided to postpone the Chapter 3 test to tomorrow and instead guide students through the Lesson 17 Flame Test Pre-Lab.

First, we watched the video below so students could better understand what the lab would entail:

Next, students read the Flame Test Lab procedure and then answered the pre-lab questions.  Students also received the Chapter 4 Notes and had the remainder of the class period to read through Lesson 17 in the textbook and work on the notes.