1. Catalyst – February 5x5, 2013 Week #7
Monday Mystery Element!
(copy each clue, make 1 guess)
Name comes from 2 Greek words meaning “green” and “twin”
Found in the sand of Brazil, India, and Florida…also at the bottom of the PT
Used to make electrodes in lamps

2. Praseodymium mystery element…
Electrode—solid electric conductor through which an electric current enters or leaves an electrolytic cell or other medium

3. HOMEWORK: Workbook pg 71-74 HONORS HW: Workbook pg 70-73
Today’s Agenda
Catalyst
Quick Notes: Periodic Table Basics
Quick Vocab!
Periodic Table Project Work Time
Exit Question
HOMEWORK: Workbook pg 71-74
HONORS HW: Workbook pg 70-73

4. If you missed Friday’s quiz, you MUST make it up TODAY AT LUNCH
If you missed Friday’s quiz, you MUST make it up TODAY AT LUNCH! Get a pass from Ms. Stroh!!!! If you don’t make up your quiz, you will get a ZERO!!! 

5. Today’s Objectives
SWBAT identify the main regions and families of the periodic table.
SWBAT define important words related to the periodic table.
SWBAT understand requirements for the Periodic Table Project.

6. NOTES: PERIODIC TABLE BASICS

7. Navigating the Periodic Table
Atomic Number (small whole number)
Element Symbol
(letters)
Atomic Mass
(big decimal number)

8. Find the atomic number of this element

9. Find the atomic number of this element

10. Atomic Number is an Element’s ID Number
Like your social security number or a professional athlete’s jersey number, the atomic number of an element identifies that element

13. The Periodic Table
Key Point #1: The periodic table organizes the elements into many different groups based on physical and chemical properties.
We will learn about the major ways to group the elements – by…
Family/Metals/Metalloids/Nonmetals
Valence Electrons and Electron Configuration
Atomic Radius (Size)
Electronegativity

14. What does PERIODIC mean?
Key Point #2: The term “periodic” means that there is some kind of pattern or grouping.
In the Periodic Table, there are numerous patterns

15. Metals, Metalloids, and Nonmetals

16. Major Families H He Be B C N O F Ce Th

17. The Evolution of the Periodic Table
In the late 1790s, French scientist Antoine Lavoisier compiled a list of elements known at that time……only 23!
In the 1800s, scientists began discovering a ton of elements……up to 70!

18. John Newlands (1860s)
Arranged the Periodic Table by increasing ATOMIC MASS
Noticed patterns based on physical and chemical properties - repeated every 8th element
Law of Octaves

19. Newland’s Periodic Table Law of Octaves

20. Mendeleev (1869)
Arranged elements by increasing ATOMIC MASS into columns based on chemical and physical properties
Left spaces for undiscovered elements
First to publish table

21. Mendeleev’s Periodic Table
EMPTY SPACES!

22. Mosely (1913) Arranged elements by increasing ATOMIC NUMBER
Some of Mendeleev’s elements in the wrong order
Periodic Law

23. Our Periodic Table – Thanks to Mosely

24. Metals, Metalloids, and Nonmetals

25. Major Families Noble Gases Alkali Metals Halogens
Alkaline Earth Metals H He Be B C N O F
Transition Metals
Lanthanides Ce Th
Actininides

26. Worksheet, then… Chapter 6 Vocabulary (on own paper, turn in to folder)
Periodic Law
Metals
Nonmetals
Metalloids
Representative elements
Atomic radius
Ionization energy
Electronegativity

27. Periodic Table Project
Will choose an element from the list provided
No one can have the same element!
Part 1: Element Card for the wall (25 Points)
Part 2: Element Facebook Page (75 Points)
Cool Source! YouTube Periodic “Table of Videos”

31. HOMEWORK: Workbook pg 71-74 HONORS HW: Workbook pg 70-73
Exit Question
Why is the term “periodic” used to describe the table of elements?
What are the 3 main regions on the periodic table?
What is your element?
HOMEWORK: Workbook pg 71-74
HONORS HW: Workbook pg 70-73