Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
higher
higher
lower
Intermolecular
Forces
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Oct 6­7:55 AM
(1)
Consider the statement: "As H2O changes from a liquid form to a gaseous form, the H­O bonds of the water are breaking." Support or refute this statement with a complete explanation. (2)
Oct 2­9:51 AM
Oct 11­7:33 AM
H2O molecule
LiCl crystal
Show the interactions of
components of LiCl (aq) in a beaker.
Include only one formula unit of LiCl
and no more than 10 molecules of
water. Include: Identity of ions
butane
(symobl and charge) & proper
orientation of particles.
Oct 2­8:28 AM
butanone
butanol
LiCl (aq)
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Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
Oct 3­9:57 AM
Oct 3­2:22 PM
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Oct 3­10:24 AM
H2O molecule
MgCl2 crystal
Show the interactions of
components of MgCl2 (aq) in a
beaker. Include only one formula
unit of MgCl2 and no more than 12
molecules of water. Include:
Identity of ions (symbol and charge)
& proper orientation of particles.
Oct 2­8:28 AM
MgCl2 (aq)
Oct 7­2:24 PM
2
Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
Sketch a solution of aqueous
ammonia, NH3, showing (1) identity
of the substances and (2) the
correct orientation of those
substances. Show no less than 2
NH3 and no less than 4 H2O
particles. Also, indicate the
intermolecular force(s) present.
N
O
H
H
H
H
H
Note: Use ­­­­ to show intermolecular attractions
NH3 (aq)
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Oct 11­7:35 AM
Oct 11­7:36 AM
Oct 11­7:37 AM
Fill in the red lines and
describe the e- when
prompted
Oct 6­7:55 AM
Oct 10­8:26 AM
3
Liquids and Solids and Intermolecular Forces.notebook
Oct 10­8:25 AM
August 12, 2015
Oct 10­8:26 AM
1) A liquid whose molecules are held together by which of the following forces would be expected to have the lowest boiling point?
(A) Ionic bonds
(B) London dispersion forces
(C) Hydrogen bonds
(D) Metallic bonds
(E) Network bonds
2) Which of the following lists of species is in order of increasing boiling points?
(A) H2 , N2 , NH3
(B) N2 , H2 , NH3 (C) NH3 , H2 , N2
(D) NH3 , N2 , H2
(E) H2 , NH3 , N2
Oct 10­8:26 AM
Oct 11­8:09 AM
1) Which of the compounds listed below would require the greatest energy to separate it into ions in the gaseous state?
(A) NaCl
(B) NaI
(C) MgO
(D) Na2O
(E) MgCl2
2) Which of the molecules listed below has the largest dipole moment?
(A) Cl2
(B) HCl
(C) SO3
(D) NH3
(E) N2
Oct 11­8:12 AM
Oct 10­8:28 AM
4
Liquids and Solids and Intermolecular Forces.notebook
Oct 10­8:31 AM
August 12, 2015
Oct 10­8:28 AM
(a) Draw the Lewis electron-dot
diagram for Ethyne.
(b) Which of the four molecules
has the shortest carbon-tocarbon bond? Explain.
(c) Ethanoic Acid is given below.
What is the geometry around C x
and Cy?
(d) Consider the statement, "As ethanol boils, energy goes into
breaking C-C bonds, C-H bonds, C-O bonds, and O-H bonds." Is this
statement true or false? Justify your answer.
(e) Identify a compound from the table above that is nonpolar.
(f) Ethanol is completely soluble in water, whereas ethanethiol is
slightly soluble. Explain in terms of intermolecular forces.
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Oct 10­8:32 AM
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Oct 8­10:26 AM
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Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
(A) CO2
(B) H2O
(C) SO2
(D) NO2
(E) O2
1) In this molecule, oxygen forms sp 3 hybrid orbitals.
2) This molecule contains one unpaired electron.
3) This molecule contains no pi ( π) bonds.
4) Oxygen has an oxidation state of zero in this molecule.
Oct 12­8:00 AM
Oct 10­8:28 AM
1) If the carbon­to­carbon bond in C2H6 is found to have a bond energy of 350 kJ/mol and a bond length of 1.5 angstroms. Explain what the relative bond energy and length of the carbon­to­
carbon bond for C2H4 would be.
2) A pure sample of KClO3 (FW = 123.5) is found to contain 71 grams of chlorine atoms. What is the mass of the sample?
(A) 122 grams
(B) 170 grams
(C) 209 grams
(D) 245 grams
(E) 293 grams
Oct 10­8:27 AM
2
Oct 12­8:08 AM
1) The first ionization energy for magnesium is 730 kJ/mol. The third ionization energy is 7700 kJ/mol. What is most likely the value for the second ionization energy?
(A) 490 kJ/mol
(B) 1400 kJ/mol
(C) 4200 kJ/mol
(D) 7100 kJ/mol
(E) 8400 kJ/mol
2) Which of the following groups below is (are) listed in order from lowest to highest melting point?
I. KI, LiF, BeO
II. F 2, Cl2, Br2
III. K, Na, Li
Oct 12­8:11 AM
Oct 13­8:16 AM
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Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
2008 Form A Practice Exam Question
Oct 13­8:11 AM
Oct 13­8:21 AM
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Oct 13­8:18 AM
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Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
Oct 18­8:18 AM
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8
Liquids and Solids and Intermolecular Forces.notebook
August 12, 2015
Unknown Lab
BaCl2 NaCl NH4Cl Pb(NO3)2
AgNO3 CoCl2
Can only use to identify:
• Appearance
• H2 O
• 1M Na3 PO4
• 1M NaOH
• 1M KI
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Oct 19­9:11 AM
Oct 19­9:12 AM
Oct 19­9:12 AM
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