9/29/2009
Name: __________
Date: __________
b.
1.
State the intermolecular forces in each of the following groups of molecules and then number them from highest to lowest boiling points. The following abbrivations are allowed: Ionic = I, Dipole-Dipole = DD, London Dispersion = LD, Hydrogen Bonding =
HB (2 marks each) a. Cl H
\ /
C ═ C
/ \
H H
H H O
│ │ ║
H ─ C ─ C ═ C ─ C ─ OH
│ │
H H
CH
4
C
2
H
6
CH
3
Cl CH
3
OCH
3 c. C
6
H
5
OH d. H
2
O
C
6
H
HF
5
F C
6
H
5
CH
3
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9/29/2009 e. f.
CO
CH
2
3
CH
3,
CH
3
NH
2
SiO
, CH
3
2
OH, CH
3
F g. CH
3
OCH
3
, CH
3
CH
2
OH, CH
4 e.
c.
a.
2.
Identify the types of intramolecular or intermolecular bonds in the following. You may use the abbreviations from the first question. (0.5 marks each) b.
argon _____________________ water _____________________ f.
Al ___________________ g.
CaCl
2
________________ methane __________________ h.
KClO
3
_______________ d.
carbon monoxide ___________ i.
NaCl _________________
SiC ______________________ j.
HCN _________________
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9/29/2009
3.
Predict the order of increasing melting points of these substances containing chlorine. Explain the basis for your prediction. (2 marks)
HCl Cl
2
NaCl CCl
4
4.
Arrange from highest to lowest boiling point. (2 marks)
LiF, H
2
O, H
2
CNH, HCN, CsCl, Co, C, C
3
H
8,
PH
3
, F
2,
SCl
2
5. You are also responsible for reading the following in the textbook: Nelson pages 119-
129. Define the following terms and concepts: (0.5 marks each)
Crystal lattice: ……………………………………………………………………...............
………………………………………………………………………………………………
Metallic crystal: ……………………………………………………………………………
………………………………………………………………………………………………
Molecular crystal: …………………….……………………………………………………
………………………………………………………………………………………………
Covalent network crystal: ……………………….…………………………………………
………………………………………………………………………………………………
The 4 covalent networks of Carbon: ……….………………………………………………
………………………………………………………………………………………………
Semiconductors: ……………………………………………………………………………
………………………………………………………………………………………………
Bonus Questions: Answer only ONE!!!
Fair Bonus Question: Define the term allotrope.
Unfair Bonus Question: Write yours or someone you love’s name using only chemical symbols for elements.
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