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Chapter-1-PPT-questions

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28/11/1435
Chemistry: A Molecular Approach,
Second Edition
Nivaldo J. Tro
Which of the following is correct for the material
pictured?
CRS “Clicker” Questions
Jason A. Kautz
University of Nebraska-Lincoln
Chapter 1
Matter,
Measurement,
and Problem
Solving
Copyright © 2011 Pearson Education, Inc.
a gaseous pure substance
a liquid pure substance
a gaseous mixture
a solid mixture
none of the above
Copyright © 2011 Pearson Education, Inc.
Which of the following is correct for the material
pictured?
Which of the following has the
largest density?
a)
b)
c)
d)
e)
a) a material that has a mass of
10.0 g and a volume of 2.00 L
b) a material that has a mass of
5.00 g and a volume of 10.0
cm3
c) a material that sinks in ethanol
but floats on water
a gaseous pure substance
a liquid pure substance
a gaseous mixture
a solid mixture
none of the above
Copyright © 2011 Pearson Education, Inc.
1
a)
b)
c)
d)
e)
Copyright © 2011 Pearson Education, Inc.
28/11/1435
Which of the following has the
largest density?
a) a material that has a mass of
10.0 g and a volume of 2.00 L
b) a material that has a mass of
5.00 g and a volume of 10.0
cm3
c) a material that sinks in
ethanol but floats on water
Copyright © 2011 Pearson Education, Inc.
When reading a graduated cylinder, read the volume at
the bottom of the meniscus.
When reading a graduated cylinder, read the volume at
the bottom of the meniscus.
What volume of liquid is in the graduated cylinder?
a)
b)
c)
d)
e)
4 mL
5 mL
4.5 mL
4.6 mL
4.56 mL
Copyright © 2011 Pearson Education, Inc.
A student measures the mass of a penny 4 times and
records the following data. What can be said about the
data if the actual mass of the penny is 2.4987 g?
What volume of liquid is in the graduated cylinder?
a)
b)
c)
d)
e)
4 mL
5 mL
4.5 mL
4.6 mL
4.56 mL
Copyright © 2011 Pearson Education, Inc.
2
a) The data is both accurate and
precise.
b) The data is neither accurate
nor precise.
c) The data is accurate, but not
precise.
d) The data is not accurate, but it
is precise.
Copyright © 2011 Pearson Education, Inc.
Trial
Number
Mass,
g
1
2.5104
2
2.5106
3
2.5102
4
2.5109
28/11/1435
A student measures the mass of a penny 4 times and
records the following data. What can be said about the
data if the actual mass of the penny is 2.4987 g?
a) The data is both accurate and
precise.
b) The data is neither accurate
nor precise.
c) The data is accurate, but not
precise.
d) The data is not accurate,
but it is precise.
Trial
Number
Mass,
g
1
2.5104
2
2.5106
3
2.5102
4
2.5109
Copyright © 2011 Pearson Education, Inc.
a)
b)
c)
d)
e)
Freezing water to make ice cubes
Dry ice evaporating at room temperature
Toasting a piece of bread
Dissolving sugar in hot coffee
Crushing an aluminum can
Copyright © 2011 Pearson Education, Inc.
Which of the following represents a chemical change?
Chlorine vaporizes at –34.4 °C. What is this
temperature in degrees Fahrenheit?
a)
b)
c)
d)
e)
a)
b)
c)
d)
e)
Freezing water to make ice cubes
Dry ice evaporating at room temperature
Toasting a piece of bread
Dissolving sugar in hot coffee
Crushing an aluminum can
Copyright © 2011 Pearson Education, Inc.
3
Which of the following represents a chemical change?
–34.4 °F
–29.9 °F
238.75 °F
307.55 °F
273.15 °F
Copyright © 2011 Pearson Education, Inc.
28/11/1435
Chlorine vaporizes at –34.4 °C. What is this
temperature in degrees Fahrenheit?
a)
b)
c)
d)
e)
–34.4 °F
–29.9 °F
238.75 °F
307.55 °F
273.15 °F
Copyright © 2011 Pearson Education, Inc.
Which of the following would NOT be considered an
intensive property describing an unknown sample?
a)
b)
c)
d)
e)
It is a solid at 25 °C.
It has a density of 1.38 g/ cm3.
It melts at 62.0 °C.
It has a volume of 0.52 cm3.
It is shiny.
Copyright © 2011 Pearson Education, Inc.
4
Which of the following would NOT be considered an
intensive property describing an unknown sample?
a)
b)
c)
d)
e)
It is a solid at 25 °C.
It has a density of 1.38 g/ cm3.
It melts at 62.0 °C.
It has a volume of 0.52 cm3.
It is shiny.
Copyright © 2011 Pearson Education, Inc.
Calculate the following with the correct number of
significant figures.
(1.428 − 1.08)
+ (2.83 × 0.360) =
0.288
a)
b)
c)
d)
e)
2
1.4
2.2
1.36
2.23
Copyright © 2011 Pearson Education, Inc.
28/11/1435
Calculate the following with the correct number of
significant figures.
(1.428 − 1.08)
+ (2.83 × 0.360) =
0.288
a)
b)
c)
d)
e)
2
1.4
2.2
1.36
2.23
Copyright © 2011 Pearson Education, Inc.
Determine the mass of 2.5 cups of water if the density
of water is 1.00 g/ cm3 and 1 cup = 240 mL.
a)
b)
c)
d)
e)
2.5 g
6.0 x 102 g
1.0 x 10–2 g
2.4 x 102 g
1.0 x 102 g
Copyright © 2011 Pearson Education, Inc.
5
Determine the mass of 2.5 cups of water if the density
of water is 1.00 g/ cm3 and 1 cup = 240 mL.
a)
b)
c)
d)
e)
2.5 g
6.0 x 102 g
1.0 x 10–2 g
2.4 x 102 g
1.0 x 102 g
Copyright © 2011 Pearson Education, Inc.
How many ounces of mercury are in 1.0 cubic meters
of mercury? Hint: the density of mercury is 13.55 g/cm3
and 1 ounce = 28.35g
a)
b)
c)
d)
e)
6.5 x 106 ounces
4.8 x 105 ounces
5.2 x 104 ounces
6.5 x 104 ounces
48 ounces
Copyright © 2011 Pearson Education, Inc.
28/11/1435
How many ounces of mercury are in 1.0 cubic meters
of mercury? Hint: the density of mercury is 13.55 g/cm3
and 1 ounce = 28.35g
a)
b)
c)
d)
e)
6.5 x 106 ounces
4.8 x 105 ounces
5.2 x 104 ounces
6.5 x 104 ounces
48 ounces
Copyright © 2011 Pearson Education, Inc.
a.
b.
c.
d.
e.
sweat
beef stew
coffee
apple juice
ice
Copyright © 2011 Pearson Education, Inc.
Which of the following is a pure substance?
Which of the following is a heterogeneous mixture?
a.
b.
c.
d.
e.
a.
b.
c.
d.
e.
sweat
beef stew
coffee
apple juice
ice
Copyright © 2011 Pearson Education, Inc.
6
Which of the following is a pure substance?
seawater
chicken soup
coffee
hydrogen peroxide
ice
Copyright © 2011 Pearson Education, Inc.
28/11/1435
Which of the following is a heterogeneous mixture?
Which of the following is a chemical property?
a.
b.
c.
d.
e.
a.
b.
c.
d.
seawater
chicken soup
coffee
hydrogen peroxide
ice
e.
Copyright © 2011 Pearson Education, Inc.
Copyright © 2011 Pearson Education, Inc.
Which of the following is a chemical property?
Which of the following is not a base unit?
a.
b.
c.
d.
a.
b.
c.
d.
e.
e.
squeezing oranges to make orange juice
melting butter for popcorn
separating sand from gravel
hydrogen peroxide decomposes to water and
oxygen
ozone is a gas at room temperature
Copyright © 2011 Pearson Education, Inc.
7
squeezing oranges to make orange juice
melting butter for popcorn
separating sand from gravel
hydrogen peroxide decomposes to water and
oxygen
ozone is a gas at room temperature
meter
kilogram
liter
kelvin
ampere
Copyright © 2011 Pearson Education, Inc.
28/11/1435
Which of the following is not a base unit?
a.
b.
c.
d.
e.
meter
kilogram
liter
kelvin
ampere
Copyright © 2011 Pearson Education, Inc.
8
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