drill: determine wavelength of a 221 g ball traveling at 60.0 m/s
TRANSCRIPT
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Drill: Determine wavelength of a
221 g ball traveling at60.0 m/s.
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Review & Collect Drill
& HW
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CHM II HW•Review PPs 13 & 14
•Complete the attached assignment & turn it in tomorrow
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Are there any questions on
previous material?
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Chemical Periodicity
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Atomic Size•Size increases as you go down in any column
•Size decreases from left to right in any row
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Ionic Size•Size increases as total charge decreases
•C+2 > C+4
•F-1 > F
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Rank the elements from their atomic number
from smallest to largest
9, 55, 13, 11, & 1
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Ionization Energy•The energy required to remove electrons from atoms or ions
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1st Ionization Energy• Decreases as you go
down any column
• Increases from left to right on any row
• Fr <<<<<<<<<<<<<He
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Shielding Effect• The further away an
electron is from the nucleus, the more electron clouds lie between the electron & the nucleus
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Ionization Energies
•2nd > 1st
•3rd > 2nd
•Massive increase when a shell is emptied
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Electron Affinity•The attraction of electrons by an atom
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Electron Affinity• Decreases as you go
down any column
• Increases from left to right across any row
• Fr <<<<<<<<<<<< F
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Drill: Arrange the following atoms from lowest to highest 1st ionization energies:
2, 20, 14, 55, 7
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Review & Collect Drill
& HW
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CHM II HW•Review PPs 13 & 14
•Complete the attached assignment & turn it in tomorrow
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Are there any questions on
previous material?
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Electronegativity
•The attraction of shared pairs of
electrons by an atom
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Electronegativity• Decreases as you go
down any column
• Increases from left to right across any row
• Fr <<<<<<<<<<<< F
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Drill:Describe the trends
of the first four ionization energies
of aluminum
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Metallic Character
•Increases as you go down any column
•Decreases from left to right across any row
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Reactivity•Metals 1A > 2A > 3A
•Metals increase down
•Nonmetals increase as you get closer to F
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Drill: Place the following in largest to smallest order with
respect to: 1) diameter 2) 1st ionization energy
3) electronegativity 4) metallic character
•Elements #: 1, 4, 8, 15, 55
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Review & Collect Drill
& HW
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Test Tomorrow
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Test Review
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Choose the higher of each pair in: ________
Na-Cl Fe-CrS-Cl H-ClMg-S Si-Cl
N-O Fe-Ru
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Draw the electron configuration for:
Cl-17 Fe-26 Ra-88
(Cr-24)+3 (Te-52)-2
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Draw the electron dot diagram for:
Cl-17 Fe-26 Ra-88
Cr-24 Te-52 As-33
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Calculate the energy of IR radiation with a
wavelength of 996 nm.
c = 3.00 x 108 m/s h = 6.63 x 10-34 Js
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Calculate the mass of IR radiation with a wavelength of 996
nm. c = 3.00 x 108 m/s h = 6.63 x 10-34 Js
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Calculate the volume of gas released at
227oC under 83.1 kPa when 770 g of octane
(C8H18) is burned.