1. Unit 2: The Periodic Table

2. Essential Questions
How is the periodic table used to classify elements?
How is the average atomic mass determined for an element?
What components make up an atom and where are they located?
How do atoms combine?
What are isotopes and their properties?

3. Chapter Challenge Overview
Develop a game related to Mendeleev’s Periodic Table
How the game is played is up to you – with cards, a computer, dice, etc.
You need to:
Demonstrate understanding of the periodic table
Teach others about the periodic table in your game
Make it interesting and fun!

4. Day 1: Organizing a Store
Learning Objectives:
Plan the arrangement of the items for sale in a store
Analyze trends in the arrangement of the store
Relate the arrangement of items in the store to the arrangement of elements in the periodic table

5. Starter:
Some supermarkets now sell books, flowers, and prescription drugs in addition to what you would think of as a traditional supermarket.
How many different items do you think a supermarket has in its inventory?
Time: 15 minutes

6. Activity 1
You and your group are going to open up a supermarket. Brainstorm a list of items that you would sell at your store.
Time: 20 minutes

7. Activity 2
Create a map showing the locations of all the items in your store.
Think about where you will put things and in what order in the aisle you will put them.
Keep in mind what you want shoppers to see as they enter the store.
Time: 35 minutes

8. Activity 3 Present your store layout to the rest of the class.
Time: 10 minutes

9. Closing and homework
How does organizing a supermarket relate to organizing a periodic table?
Homework:
Test corrections

10. Day 2: Elements and Their Properties (60 mins)
Learning Objectives
Apply ancient definitions of elements to materials you believe are elements
Test some properties of common chemical elements
Classify elements as metals, nonmetals or neither
Differentiate between physical and chemical properties
Organize a table based on properties

11. Starter
Complete the table to compare and contrast metals and nonmetals
What is a chemical element?
Time: 15 minutes
Compare (Similarities )
Contrast (Differences)

12. Activity 1
Make a list of 4 or more substances that you use in your everyday life that meet your definition of an element (individual)
Compare your list to the other members of your group
The Ancient Greeks believed the four elements were: Earth, Air, Fire, Water
The Alchemists of the early Renaissance identified three elements: Mercury, Sulfur, and Salt
Do the above “elements” satisfy your definition? Why or why not?
Time: 15 minutes

13. Activity 2 Test the following substances:
Al, Cu, I, Fe, Mg, Si, S, Zn
Test the following properties:
Initial observations (appearance), Conducts electricity, Reacts with HCl, Metal or Nonmetal
Create a table to record your observations
Time: 25 minutes

14. Closing and Homework Read Chem Talk (pg. 699)
Chemistry to Go (pg. 701) #1, 2
Preparing for the Chapter Challenge (pg. 701)

15. Day 3: Atoms and Their Masses
Learning Objectives:
Explore the idea of atoms by trying to isolate a single atom
Measure how many times greater mass a copper atom has than an aluminum atom
See that atoms react in definite proportions of mass when forming a compound
Compare Dalton’s experimental results to the masses of atoms known today
Relate the mole concept to real quantities

16. Starter Atoms are the smallest, indivisible part of an element
Complete the following table
Time: 15 minutes
Things I know about atoms
Things I think I know about atoms
Things I would like to know about atoms

17. Activity 1 Follow the steps starting on pg. 702
Complete steps #1-13 recording your data along the way
Time: 45 minutes

18. Activity 2
Discuss your results and put them in the table drawn on the board
You will do a lab write up (CERR model) for this lab
Check the instructions and what to include on the wiki
Due: Thursday, September 27
Time: 10 minutes

19. Closing and Homework Discuss the following questions: Homework:
What is the difference between an element and a compound?
How is an atomic mass unit defined
How does the existence of atoms help explain the Law of Definite Proportions?
Homework:
Read Chem Talk (pg. 706)
Chemistry to go (pg. 710) #1, 3
Preparing for the Chapter Challenge