1. Chemistry Do Now
Directions: Take out a sheet of notebook (Do Now sheet) and set it up as instructed. Answer the following question. (5 minutes).
How is the PTE organized?
Draw Bohr model for selenium.
How many valence electrons does arsenic have?
Identify an element with 3 valence electrons.

2. Objective
Students will know how finding patterns in properties of elements benefits the scientific community by taking notes on the atom, watching a video, organizing a Periodic Table and performing a close read w/TDQs.
Mastery Level: 75% or better

3. Homework, if extra time is needed
Element Research project due by Mon., 3/4/19
1. To gather information for your project, answer all the questions in the topics below. Be sure to record your sources (websites, etc.).
2. Look at the rubric on the back of this page to make your project the best it can be! Be creative with your presentation. You will be placing all the information you gathered in a poster or brochure. You may hand-draw your product, use the computer, or a combination of both. Keep your intended audience in mind – a classroom visitor should be able to understand what they’re seeing!

4. Vocabulary Words Matter Atom Electron Proton Neutron Bohr Model
Lewis Dot Diagram
Electron Configuration

5. Engage
Students will watch the video “Tom Lehrer - The Elements - LIVE FILM From Copenhagen in 1967”
Source: =AcS3NOQnsQM

6. Explore
Students will learn how to represent the valence electrons of elements using the Lewis dot diagram and electron configuration.
1) Sodium
2) Nitrogen
3) Oxygen
4) Chlorine
5) Sulfur
6) Calcium
7) Fluorine
Design a Table Challenge:
Students are given Periodic Table Intro Cards, which they sort into their own periodic table based on observed properties.
Students will work in pairs to complete this activity.

7. Explain
Reading Activity - Students read and annotate the article 20 Things You Didn't Know About... The Periodic Table Discover Magazine and use the information to analyze the process of creating the periodic table with guided questions Mendeleev’s Periodic Table Guided Questions.
Source: /science/high/chemistry/Shared%20Documents/Unit%20 1%20- %20Atomic%20Structure%20&%20Patterns/Assignment s/20%20Things%20You%20Didn't%20Know%20About... %20The%20Periodic%20Table%20_%20DiscoverMagazi ne.pdf

8. Extend & Evaluation
Element Research project due by Mon., 3/4/19 (You should work in pairs)
1. To gather information on one element for your project, answer all the questions in the topics below. Be sure to record your sources (websites, etc.).
2. Look at the rubric on the back of this page to make your project the best it can be! Be creative with your presentation. You will be placing all the information you gathered in a chart or brochure. You may hand-draw your product, use the computer, or a combination of both. Keep your intended audience in mind – a classroom visitor should be able to understand what they’re seeing!