2. Flame-test conclusion
How electron energy level transitions create different colors of flame A c

3. Introduction to the periodic table
Ted-ed: The creation of the periodic table
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5. Trends in the Periodic Table
Atomic Size:
---decreases as you move across a period
---increases as you move down a group
What is the biggest atom in the periodic table?
Smallest?
Label it on your periodic table now. 21 21

6. 22 22

7. 23 23

8. Draw a line to separate the metals from non-metals on your pd. tbl.

9. Metals vs. Nonmetals 25 25

10. How elements like to interact →
Metals like to get rid of their valence electrons and nonmetals like to get extra.
For example, sodium (a metal) reacts with chlorine (a nonmetal) below →

11. Metals have few valence electrons, so they like to get rid of them to obtain a full valence shell

12. Label it on your periodic table.

14. Label it on your periodic table.

16. Groups/Families in the Periodic Table
Metalloids 32 32

17. Groups/Family members share chemical properties
All members of a group/family have the same number of valence (outermost shell) electrons.
Rows: Periods Columns: Groups/ Families
This is the primary determinant of their reactivity and chemical properties. 33 33

18. Atoms in a group has the same number of valence electrons

19. Periods and Famlies
Period - Horizontal rows on the periodic table. Tells you how many electron shells (n) that the element has.
Family / Group - Vertical columns on the periodic table. Tells you how many valence electrons an element has.
Valence electrons – the electrons in the outermost shell (n) of an atom. 35 35

20. Trends in the Periodic Table
Rows: Periods Columns: Groups/ Families
Important groups:
Metals, Semimetals, Nonmetals
Alkali Metals (Group 1): Shiny, soft, reacts rigorously with water, often forms salts
Alkaline Earth Metals (Group 2) : react with O2 often forms salts
Halogens: Gases, very reactive (Group 7). Often reacts with metals to form salts.
Noble Gases(Group 8): inert gases, very stable.; does not participate in periodic trends. 36 36

21. Alkali Metals Alkali Metals Reacting with Water
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Alkali Metals (Group 1): Shiny, soft, reacts rigorously with water, often forms salts

22. Alkaline Earth Metals
Chemistry of the group 2 elements (reactions with water)
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Group 2 Reactions with water - Periodic Properties
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Alkaline Earth Metals (Group 2) : react with O2 often forms salts

23. Halogens
Sodium and Halogens Explosive Reactions! | Chlorine, Bromine, Iodine
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Halogens: Gases, very reactive (Group 7). Often reacts with metals to form salts.

24. Noble Gases
Noble Gases(Group 8): inert gases, very stable,generally do not react. Also does not participate in periodic trends.

25. Formative assessment - Coloring the Periodic Table
Directions: Get some color pencils. Figure out where the following groups/families live on the periodic table, using your textbook or the internet, and color them in as such on the periodic table on the next page:
Alkali Metal: Red
Alkali Earth Metal: Orange
Halogens: Blue
Noble Gases: Purple
Part 2 Directions: Locate Phosphorus on the periodic table, and locate all 8 of its neighboring elements. Shade the 9 element boxes in according to size. Shade the element with the smallest atom the lightest, and the element with the largest atom the darkest.

26. Periodic Table Game
Decode a message!

27. Review WS for E02 Exam Chapter 4 – Atomic Structure
Chapter 5 – Periodic Table and the elements