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A common scale for denoting a mineral's hardness is the
A) Ores scale.
B) Mohs scale.
C) Homs scale.
D) Ohms scale.
The chemical properties of chlorine and bromine are similar because both
A) are nonmetals and they are close together in the periodic table.
B) have seven valence electrons.
C) have two electrons in the first shell.
D) are in the same period.
Smog is a mixture of smoke and
A) fog.
B) CO2.
C) O2.
D) CO.
The term hardness refers to the ability of a mineral to
A) resist scratching.
B) break along definite smooth planes.
C) break into equal-sized halves.
D) scratch other minerals.
Mass is a measure of
A) inertia.
B) force.
C) grams.
D) weight.
E) kilograms.
The radial distance to the event horizon from the singularity of a black hole is called
A) the Roche limit.
B) the Schwarzschild radius.
C) the Hubble unit.
D) none of the above.
To which group of polymers does Mylar belong?
A) Natural
B) Hydrolytic
C) Addition
D) Condensation
Earth's core is
A) liquid.
B) part solid and part liquid.
C) solid.
D) molten.
The interrelationship among the processes that produce the three classes of rock is
referred to as
A) the rock cycle.
B) the bedding principle.
C) the principle of cross-cutting relationships.
D) metamorphism.
Which of the following eons is the oldest?
A) Proterozoic
B) Phanerozoic
C) Hadean
D) Archean
Which of the five major divisions of chemistry deals exclusively with carbon
compounds?
A) Physical chemistry
B) Inorganic chemistry
C) Analytical chemistry
D) Organic chemistry
E) Biochemistry
The coldest region of the atmosphere is the
A) stratosphere.
B) troposphere.
C) mesosphere.
D) thermosphere.
When an unstable Ir nucleus undergoes alpha decay, the nucleus formed is that of
A) Ir.
B) Au.
C) Os.
D) Re.
E) Pt.
A quantum is a
A) discrete amount.
B) fundamental property.
C) unit of momentum.
D) proton.
The suffix -ol in a compound's name signifies
A) an enzyme.
B) an amide.
C) an alcohol.
D) a carbohydrate.
A methane molecule is
A) flat and polar.
B) flat and nonpolar.
C) tetrahedral and nonpolar.
D) pyramidal and polar.
What is the name of the earthquake scale that gives an absolute measure of the energy
released by an earthquake?
A) Modified Mercalli scale
B) Mohs scale
C) Torino scale
D) Richter scale
The sedimentary rock known as ______________ consists of angular pebbles cemented
together by silica, calcium carbonate, or iron oxide.
A) conglomerate
B) breccia
C) limestone
D) shale
A very tentative explanation of observations of some regularity of nature is a(n)
A) scientific law.
B) theory.
C) experiment.
D) hypothesis.
The most abundant element in the universe is
A) hydrogen.
B) iron.
C) oxygen.
D) carbon.
The atomic theory was revived and put on a solid experimental foundation in about
1803 by
A) Proust.
B) Dalton.
C) Boyle.
D) Lavoisier.
The Sun's rays are transmitted to Earth by means of
A) radiation.
B) convection.
C) temperature.
D) conduction.
______________ is the only moon in the solar system to have retrograde motion.
A) Ganymede
B) Europa
C) Callisto
D) Titan
E) Triton
Which of the following principal quantum number values is impossible?
A) 2.5
B) 16
C) 3
D) 1
When there is a net release of energy in a chemical reaction, it is called a(n)
______________ reaction.
A) exothermic
B) activation
C) endothermic
D) combustion
The most violent volcanic eruption in recorded history was that of
A) Paracutin.
B) Mount Saint Helens.
C) Tambora.
D) Mount Pele.
The energy of motion is called
A) inertia.
B) power.
C) kinetic energy.
D) potential energy.
The percentage by mass of carbon
A) would be the same in CO as in CO2.
B) would be greater in CO than in CO2.
C) would be less in CO than in CO2.
D) cannot be determined without additional information.
The oldest known fossils of the genus Homo date from about how long ago?
A) 6000 years
B) 2 million years
C) 10,000 years
D) 65,000 years
The shortest-daylight day for people in the Northern Hemisphere at latitudes greater
than 30N occurs at the
A) summer solstice.
B) vernal equinox.
C) winter solstice.
D) autumnal equinox.
Lightning that illuminates clouds with flickering flashes is called
A) heat lightning.
B) flash lightning.
C) ball lightning.
D) bolt lightning.
Planets in a planetary system other than the solar system
A) have never been detected.
B) have been detected.
C) are an impossibility.
D) are universally present.
The Lewis symbol would be characteristic of which group?
A) 2A
B) 4A
C) 6A
D) 1A
Einstein's special theory of relativity deals with objects that are
A) being hit by X-rays.
B) entering intense gravitational fields.
C) moving close to the speed of light.
D) being hit by energetic photons.
The cin E= mc2stands for ______________.
Both line emission and line ______________ spectra are characteristic for a specific
element.
The amount of energy necessary to remove an electron from an atom is called that
atom's ______________.
The principal landform resulting from a stream's erosive power is its
______________-shaped valley.
A sound level of 96 dB is how many times as intense as one of 90 dB?
Conglomerate and breccia are classified as ______________ rocks.
CH3COOH is the structural formula for the compound named ______________.
The time before the Phanerozoic eon is collectively called ______________ time.
A system for which there are no outside effects is said to be ______________.
Compounds that occur in gaseous form at room temperature are ______________
compounds.
The Himalayas in Asia are examples of ______________ mountains.
How many kilocalories of heat would be needed to melt 0.12 kg of ice at 0°C and
increase the temperature to 25°C?
Stratification, or _____________, is the layering that develops at the time sediments are
deposited.
The largest volcano in the solar system is on ______________.
Clusters containing clusters of galaxies are called _______________.
When an acid reacts with a carbonate or hydrogen carbonate, the products are water,
______________, and a salt.
