CAS PY 11123

subject Type Homework Help
subject Pages 12
subject Words 1346
subject Authors Charles A. Higgins, James Shipman, Jerry D. Wilson

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page-pf1
Ethene and ethane are
A) isomers.
B) the same compound.
C) neither isomers nor the same compound.
The Stock system of nomenclature uses
A) Roman numerals.
B) Greek prefixes.
C) Arabic numerals.
D) Egyptian hieroglyphics.
The time interval from one vernal equinox to the next is called one ______________
year.
A) sidereal
B) celestial
C) solar
D) tropical
page-pf2
Which of the following could be the monomer of an addition polymer?
A) CCl4
B) Cl2C=CH2
C) CHCl3
D) Cl3C=CCl3
A generator is a device that converts
A) heat energy into mechanical energy.
B) chemical energy into electrical energy.
C) mechanical energy into electrical energy.
D) electrical energy into mechanical energy.
When one travels east while passing over the International Date Line,
A) the date is decreased one day.
B) the time is decreased one hour.
page-pf3
C) the time is advanced one hour.
D) the date is advanced one day.
E) none of these occurs.
In attempting to pipe water to elevated heights, ______________ investigated
atmospheric pressure.
A) Newton
B) Galileo
C) Bergeron
D) Torricelli
About 15% by mass of Earth's core is composed of the element(s)
A) iron
B) nickel
C) oxygen.
D) silicon.
E) iron and nickel.
page-pf4
The angular measurement in hours, minutes, and seconds from the celestial prime
meridian eastward is called _______________.
A) sundial
B) protractor
C) declination
D) right ascension
As a block slides down a 40 frictionless incline, its acceleration
A) decreases with distance.
B) remains constant.
C) is greatest at the bottom of the incline.
D) is greatest at the top of the incline.
The Paleozoic era began about how many million years ago?
page-pf5
A) 65
B) 545
C) 245
D) 3
A metal alloy, such as brass, is
A) a compound.
B) a heterogeneous mixture.
C) a homogeneous mixture.
D) an element.
A chemical reaction is balanced by applying all exceptwhich of the following
principles?
A) No atoms are gained, lost, or changed in identity.
B) Only the numbers preceding formulas can be changed.
C) The set of smallest whole numbers should be used.
D) Subscripts in the formulas may be changed if necessary.
page-pf6
The Lewis symbol -X- would be characteristic of which group?
A) 2A
B) 4A
C) 6A
D) 1A
A compound of which element is used as a diet supplement to prevent thyroid
problems?
A) Chlorine
B) Calcium
C) Carbon
D) Iodine
page-pf7
If an object of mass 8 kg has an acceleration of 5 m/s2, what is the unbalanced force
acting on it?
A) 40 N
B) 1.6 N
C) 0.63 N
D) 13 N
E) cannot be determined
Molten rock material beneath Earth's surface is called
A) magma.
B) lava.
C) silica.
D) pluton.
A normal lapse rate of 2.7 F/1000 ft is equivalent to
page-pf8
A) 3.5 C/m.
B) 1.5 C/1000 ft.
C) 5.0 C/1000 ft.
D) 6.5 C/1000 ft.
Chlorine is notpresent in
A) CFCs.
B) chloroform.
C) Freon-12.
D) Teflon.
At the time of a full moon, an astronaut on the Moon looking at Earth would see a
A) full Earth moon.
B) first-quarter Earth moon.
C) last-quarter Earth moon.
D) new Earth moon.
page-pf9
The ______________ angle is measured between the horizon and the line of sight to the
object.
A) declination
B) altitude
C) inclination
D) zenith
Which of the following is part of the Sun's structure?
A) Globular cluster
B) Accretion disk
C) Singularity
D) Corona
Which of the following atoms normally has one covalent bond to it?
A) At
page-pfa
B) Te
C) Si
D) P
E) Kr
Temperature is a relative measure of
A) latent heat.
B) hotness and coldness.
C) internal energy.
D) specific heat.
In organic molecules, a chlorine atom will normally form how many bonds?
A) 2
B) 3
C) 4
D) 1
E) 0
page-pfb
The component in CFCs that is responsible for destroying ozone is
A) chlorine.
B) oxygen.
C) carbon.
D) none of the above.
Volcanoes that explode violently tend to have magmas of
A) high temperature and low silica content.
B) high temperature and high silica content.
C) low temperature and low silica content.
D) low temperature and high silica content.
When an electron goes from the ground state to an excited state,
A) energy is emitted.
B) a photon is absorbed.
C) a photon is emitted.
page-pfc
D) none of these occur.
Which of the following could be the molecular formula for an alkene?
A) C9H9
B) C4H8
C) C10H19
D) C9H16
E) C9H20
The percentage composition by mass of nitrogen dioxide is approximately
A) 43% N and 57% O.
B) 33% N and 67% O.
C) 30% N and 70% O.
D) 47% N and 53% O.
page-pfd
The energy of a system
A) always increases.
B) always remains constant.
C) increases when work is done by the system.
D) increases when work is done on the system.
Liquid crystal displays (LCDs) make use of the wave phenomenon called
______________.
When cottonseed oil (a liquid) is hydrogenated, the solid fat called ______________ is
obtained.
page-pfe
How much heat is required to melt 5.0 kg of ice at 0°C to water at 0°C?
The component in CFCs that is responsible for destroying ozone is ______________.
Niels Bohr reasoned that a discrete line spectrum must be the result of a(n)
______________ effect.
Rubidium-______________ dating is an important radiometric dating tool.
page-pff
The United States' effort to build an atomic bomb was named the ______________
Project.
A Type II supernova can form a(n) _______________ or a black hole.
When the IDL is crossed going from east to west, a day is ________.
page-pf10
Dropped objects on the Moon fall at a slower rate than on Earth because of a smaller
______________.
In ratio form, the equivalence statement 1 mi = 1.61 km would be expressed as
______________.
A combination of one or more fundamental units is called a(n) ______________ unit.
If there are 2.54 cm/in., how many inches are there per centimeter?
page-pf11
What percentage of the total mass of the nine planets exists in Jupiter?
On a winter day the temperature drops from "5°C to "15°C overnight. If a pan sitting
outside contains 0.40 kg of ice, how much heat is removed from the ice for this
temperature change?
A common fuel impurity in fossil fuels is ______________.

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