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Unit 5 Notes Page 1-2. January 2. Welcome back! . Today: Today you will be able to: Describe the history of the periodic table Describe how elements are organized in the periodic table Periodic Table Activity Notes. Historical Context. The Periodic Table shows every known element

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Presentation Transcript
welcome back
Welcome back!
  • Today:
    • Today you will be able to:
      • Describe the history of the periodic table
      • Describe how elements are organized in the periodic table
    • Periodic Table Activity
    • Notes
historical context
Historical Context
  • The Periodic Table shows every known element
  • But it wasn’t always how it is today
periodic table activity
Periodic Table Activity
  • ~30 minutes to complete
  • Groups of 3-4 people
  • Turn in:
    • Lab sheet for EACH PERSON
    • Set of cards for each GROUP
  • Turn in before end of class today
  • Keep cards nice, paper clip together and turn in
properties
Properties
  • Some useful vocab:
    • Allotropic – exists in more than one form
    • Metalloid – between a metal and nonmetal
    • Base – opposite of an acid

Name

Symbol

Various Properties

~ Atomic Mass

periodic table activity1
Periodic Table Activity

Elements will fit in a square

8 across, 5 down

i history

I. History

Ch. 5 - The Periodic Table

history of the periodic table
History of the Periodic Table
  • Now it’s note-taking time!
a mendeleev
A. Mendeleev
  • Dmitri Mendeleev (1869, Russian)
    • Organized elements by increasing atomic mass
    • Grouped known elements by their properties
    • Some discrepancies in placement:
      • Iodine (127) after Tellurium (128)
a mendeleev1
A. Mendeleev
  • Dmitri Mendeleev (1869, Russian)
    • Predicted propertiesof undiscovered elements.
b moseley
B. Moseley
  • Henry Moseley (1913, British)
    • Organized by increasing atomic number.
    • Resolved discrepancies in Mendeleev’s arrangement.
review
Review
  • Period:
    • Horizontal
  • Group/Family:
    • Vertical
a metallic character
A. Metallic Character
  • Metals
  • Nonmetals
  • Metalloids
    • Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te)

B - Big

Si - Sized

Ge - Gerbils

As – Assure

Sb - Some Big

Te - Teasing

b blocks
B. Blocks
  • s
  • p
  • d
  • f

Main group

c chemical reactivity
C. Chemical Reactivity
  • Families
    • Similar valence e- within a group result in similar properties
    • They have similar valence configurations
b chemical reactivity
B. Chemical Reactivity
  • s1
  • s2
  • d-block
  • f-block
  • s2p5
  • s2p6
  • Alkali Metals
  • Alkaline Earth Metals
  • Transition metals
  • Inner transition metals
  • Halogens
  • Noble Gases*
noble gases
Noble Gases
  • Are unreactive due to their full valence configurations
  • S2p6 – cannot fit any more electrons in that energy level