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Ch 8 PP w o solutions.pdf
Ch_8_PP_w_o_solutions.pdf
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Ch 8 PP w o solutions.pdf-Chem 161-2014 Some Tro C...
Ch_8_PP_w_o_solutions.pdf-Chem 161-2014 Some Tro Chapter 8
Ch 8 PP w o solutions.pdf-Chem 161-...
Ch_8_PP_w_o_solutions.pdf-Chem 161-2014 Some Tro Chapter 8
Page 5
5
Chem 161-2010 Exam I
Hill & Petrucci et al. 4
th
edition
Chapter 1
Classification of matter
6. Indicate whether each of the following changes are physical changes or chemical changes.
W. The sublimation of iodine solid in an enclosed chamber
X. The evolution of carbon dioxide gas when sugar is added to activated yeast
Y. The dissolving of NaCl in water
Z. The crystallization of sugar crystals from a sugar solution.
W
X
Y
Z
A.
physical
chemical
chemical
physical
B.
chemical
physical
physical
chemical
C.
chemical
chemical
physical
physical
D.
physical
chemical
physical
physical
E.
chemical
chemical
chemical
physical
Chem 161-2009 Exam I
Hill, Petrucci et al.
Chapter I – Chemistry: Matter and Measurement
Classification of matter
3.
Select chemical change(s) from the following.
I.
Liquid chlorine turns to gas at room temperature.
II.
Fruit rotting
III.
Distillation of octane from crude oil
IV.
Metal sodium forming hydrogen gas when in contact with water
A.
I, II and IV
B.
I, II, and III
C.
I and III
D.
II and IV
E.
III and IV
Page 6
6
4
Chem 161-2008 Exam I
Hill, Petrucci et al.
CHAPTER 1 – CHEMISTRY: MATTER AND MEASUREMENT
•
Classification of matter
Which of the following is a chemical process?
A.
Distillation of octane from crude oil.
B.
Sublimation of iodine.
C.
Excitation of Argon in a headlight.
D.
Fermentation of cane sugar.
E.
Making coffee which extracts compounds from beans.
Chem 161-2007 Exam I
Hill, Petrucci et al., 4
th
edition
Chapter 1: Chemistry: Matter and Measurement
Classification of matter
3.
Which of the following is an example of a chemical change?
A. melting ice
B.
adding carbon to iron to make steel
C.
Carbon dioxide escaping from soda
D.
Photosynthesis turning CO
2
and water into glucose
E.
Sugar crystallizing out of honey
Page 7
7
BALANCING CHEMICAL REACTIONS
Chem 161-2011 Exam II
Burdge and Overby, Chapter VIII – Chemical Reactions
•
Balancing chemical reactions (H&P, Chapter 3B)
19.
When hexane, C
6
H
14
, undergoes combustion, and the combustion equation is balanced with the
smallest integer coefficients, the coefficient of O
2
is:
A.
5
B.
9
C.
13
D.
17
E.
19
Chem 161-2010 Exam I
Hill & Petrucci et al. 4
th
edition
Chapter 3B Stoichiometry
Balancing chemical reactions
12. The smallest whole number coefficients for the following reaction when it is balanced (from left to
right) are:
Ca(OH)
2
(
s
) + H
3
PO
4
(
aq
)
→
Ca
3
(PO
4
)
2
(
s
) + H
2
O (
l
)
A. 2, 3, 1, 4
B. 3, 2, 2, 3
C. 2, 4, 2, 6
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