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A student weighing 200 N climbed a flight of stairs 9.0 m high in 4 s. How much work
was done by the student?
A) 1800 J
B) 800 J
C) 1800 W
D) 800 W
E) 50 W
Radioactive decay was discovered in 1896 by
A) Ernest Rutherford.
B) Niels Bohr.
C) Henri Becquerel.
D) Marie and Pierre Curie.
Name the following compounds.
a. NO2
b. N2O3
c. Zn(NO3)2
d. ICl5
Three resistors, 10 , 10 , and 10 , are wired in parallel and connected to a 120-V
battery. How much current flows in this circuit?
A) 4
B) 36
C) 400
D) 0.12
The apparent motion of an object when it is viewed from two different positions against
a fixed background is called
A) Hubble's effect.
B) parallax.
C) paradox.
D) Brighton's effect.
If Earth's axis were tilted at 10, the seasons of the year would
A) be shorter.
B) be harsher.
C) be longer.
D) not change.
E) be milder.
Which organic compound is represented by a pentagon?
A) Benzene
B) Cyclopentane
C) Cyclopropane
D) Cyclobutane
E) Methane
The Cretaceous is a(n)
A) epoch.
B) era.
C) eon.
D) period.
Geologists have principally used which class of rocks for radiometric dating?
A) Sedimentary
B) Igneous
C) Foliated
D) Metamorphic
An observer on the Moon looking at Earth would
A) always see a fully illuminated Earth.
B) always see a half-illuminated Earth.
C) see phases of Earth.
D) see continuous darkness.
When hydrogen reacts with ethene, what is the product?
A) Cycloethene
B) Ethane
C) Propene
D) Ethyne
E) Methane
Predict the ionic charge for an ion of each of the following representative elements.
a. Li
b. Se
c. Kr
d. N
What is the mass of 25 cm3of pure water?
A) None of these
B) 25 kg
C) 25 g
D) 25 mL
The aberration of starlight gives proof that Earth is
A) rotating.
B) revolving.
C) precessing.
D) none of these.
Precipitation is measured with
A) a psychrometer.
B) an anemometer.
C) a rain gauge.
D) a barometer.
Trace fossils are
A) tracks only.
B) borings only.
C) burrows only.
D) all of the above.
Evidence for the existence for Pangaea includes
A) biological evidence only.
B) continuity of geologic features only.
C) glacial evidence only.
D) all of the above.
Which type of reaction is 2Cu(NO3)22CuO + 4NO2+ O2?
A) Single-replacement
B) Double-replacement
C) Combination
D) Decomposition
Atoms of which group of elements have seven electrons in the outer shell?
A) Noble gases
B) Alkali metals
C) Alkaline earth metals
D) Halogens
Which statement is incorrect?
A) A kilogram has an equivalent weight greater than that of a pound.
B) A kilometer is longer than a mile.
C) A meter is longer than a yard.
D) A liter is larger than a quart.
The asteroid belt is between the orbits of
A) Earth and Mars.
B) Mars and Jupiter.
C) Earth and Venus.
D) Jupiter and Saturn.
______________ principle explains why objects float or sink in a fluid.
A) Newton's
B) Pascal's
C) Bernoulli's
D) Archimedes'
What person is known as the "father of chemistry" for his many contributions, including
the law of conservation of mass?
A) Boyle
B) Lavoisier
C) Mendeleev
D) Dalton
When one travels west while passing over the International Date Line,
A) the date is decreased one day.
B) the time is decreased one hour.
C) the time is advanced one hour.
D) the date is advanced one day.
E) none of these occurs.
The anion in the common ionic substance NaHCO3 is
A) CO3
2-.
B) H+.
C) Na+.
D) HCO3
-.
In a halo around the Milky Way's nuclear bulge lie about 200
A) brown dwarfs.
B) quasars.
C) red supergiants.
D) globular clusters.
El Nio
A) increases the rainfall for the South American coastal countries.
B) means "little girl" in Spanish.
C) gives rise to colder ocean water in the eastern Pacific.
D) occurs when trade winds blow from east to west.
The change in the direction of a wave resulting from its encountering a small slit is
known as
A) interference.
B) diffraction.
C) reflection.
D) polarization.
Which of the following is a transuranium element?
A) Tc
B) Pu
C) Tm
D) Pm
Who discovered the atomic nucleus in 1911?
A) Marie and Pierre Curie
B) Henri Becquerel
C) Ernest Rutherford
D) Niels Bohr
The type of smog that forms in Los Angeles is called ______________ smog.
A) photochemical
B) exhaust
C) biochemical
D) exhaugenic
Pope Gregory XIII decreed that 10 days would be skipped in 1582 because
A) the calendar and the seasons were out of sync.
B) of a meteor impact.
C) he was insane.
D) skipping his birthday would prevent his removal.
Which compound has three hydroxyl groups?
A) Ethylene glycol
B) Ethanol
C) Cholesterol
D) Glycerol
For the multiplication of 8.936 m divided by 1.90 m, the result should be reported with
how many significant figures?
A) Two
B) One
C) Three
D) Four
E) Seven
Force is a(n) ______________ quantity.
Balance the chemical equation: PCl5+ H2O H3PO4+ HCl
Below 4°C, water ______________ with decreasing temperature.
A neutral aqueous solution has a pH of ______________.
In terms of a combination of three other symbols, the wavelength (
) of a moving
particle is equal to ______________.
For a standing wave in a rope or string, the points that remain stationary are called
______________.
A change in the direction of a wave as a result of its encountering a sharp edge or a slit
is called ______________.
The audible range of sound is from 20 Hz to ______________ kHz.
Rocks solidified from molten material below ground are classified as ______________
igneous rocks.
Lack of knowledge of the phenomenon called ______________ led Lord Kelvin to an
incorrect estimate of the age of Earth.
An observer moving toward a stationary sound source hears a(n) ______________ in
frequency.
According to the Arrhenius theory, basic properties are caused by ______________
ions.
A(n) ______________ force is necessary for uniform circular motion.
At what longitude is an observer who sees the last-quarter moon on his meridian when
it is 12:00 noon local solar time at 75W?
If an object has a constant velocity, then its acceleration is ______________.
Light from an incandescent wire disperses into a(n) ______________ spectrum.
______________ properties are those that do notdescribe the chemical reactivity of the
substance.
The half-life of is 6.0 h. What fraction of an original sample of this radionuclide
would remain after 30.0 h have elapsed?
