Drill: Determine EC, EDD, & Ox # for each element in CuCl 2
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Transcript of Drill: Determine EC, EDD, & Ox # for each element in CuCl 2
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Drill: Determine EC, EDD, & Ox # for each element in
CuCl2
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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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Review HW•Problems:
•40 – 42 & 57 – 64
•on pages 170 & 171
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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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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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Metal Oxides•When dissolved in water, make basic solutions
•Sometimes called basic anhydrides
•MgO, Na2O, etc
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Non-metal Oxides•When dissolved in water, make acidic solutions
•Sometimes called acid anhydrides
•CO2, SO2, SO3, NO2
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Metal Hydrides•Metals bonded to H
•When dissolved in water, make basic solutions
•NaH, MgH2, AlH3, etc
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Non-metal Hydrides•Non-metals bonded to H
•When dissolved in water, make acidic solutions
•HCl, H2S, HBr, etc
•Exception: NH3
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Place the following elements in largest to smallest order
with respect to: 1) diameter 2) 1st ionization energy
3) electronegativity 4) metalic character
• Elements #: 1,5, 8, 15, 56
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Identify as ionic, covalent, or metallic bonds
Na-Cl Fe-CrS-Cl H-Cl
Mg-S C-CN-O Fe-Fe
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Active Metal Rxns
M + H2O
MOH + H2
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Predict Products:
Solid potassium is added to water:
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2 K + 2 HOH
2 KOH + 1 H2
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Predict Products:
Solid calcium is added to water:
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Ca + 2 HOH
Ca(OH)2 + H2
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Active Metal Rxns
MxOy + H2O
Mx(OH)z
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Predict Products:
Solid potassium oxide is added to
water:
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K2O + HOH
2 KOH
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Predict Products:Solid barium
oxide is added
to water:
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BaO + HOH
Ba(OH)2
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Active Metal Rxns
MxOy + H2O
Mx(OH)z
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Predict Products:Solid aluminum
oxide is added
to water:
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Al2O3 + 3 HOH
2 Al(OH)3
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Active Non-metal Rxns
X2 + H2O
HX + HXOn
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Predict Products:Chlorine gas
is bubbled
through water:
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Cl2 + H2O
HCl + HClO
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Active Non-metal Rxns
XmOn+ H2O
HXOz
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Predict Products:Sulfur dioxide gas is bubbled through
water:
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SO2 + H2O
H2SO3
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Predict Products:Dichlorine oxide
gas is bubbled through water:
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1 Cl2O + H2O
2 HClO
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An 30.0 g unknown sample (containing only C, H, & O) was burned in excess
oxygen yielding 66 g CO2 & 36 g H2O. Calculate its
empirical formula :
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An 240 g unknown sample (containing only C, H, S, &
O) was burned in excess oxygen yielding 352 g CO2, 144 g H2O, & 128 g, SO2.
Calculate its empirical formula :
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Drill: Burning octane (C8H18) occurs at a
99 % yield. Calculate the volume of oxygen
gas required to burn 228 mg octane.
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Test Review
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Write the EC, EDD, QN, & Ox States for
elements:
20, 27, 51, 42, 60, & 2
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Predict size order for elements:
45, 15, 57, 9, 88, 1
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Predict 1st ionization energy
order for elements:
22, 55, 14, 87, 8, 10
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Predict electronegativity
order for elements:
13, 38, 8, 56, 9, 10
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Predict the type of bond for:
Fe-Fe Ca-FP-O Si-OCs-I Ti-Fe