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The greater amount of substance in a solution is generally called the
A) salt.
B) solute.
C) molar concentrate.
D) solvent.
Which of the following is the shell electron configuration for sulfur?
A) 2, 4, 10
B) 10, 6
C) 2, 8, 6
D) None of these
The planet with the largest number of moons is
A) Jupiter.
B) Saturn.
C) Uranus.
D) Neptune.
Which of the following does nottake place in a chemical reaction?
A) New substances are formed.
B) Neutrons are released.
C) Energy is released or absorbed.
D) Reactants disappear.
Taking the reciprocal of a star's parallax angle in arcsec gives the star's
A) energy output in joules.
B) absolute magnitude in watts.
C) solar constant in watts.
D) distance in parsecs.
The oldest evidence of life on Earth dates back to about how many years ago?
A) 65 million
B) 3.8 million
C) 3500 million
D) 570 million
The theory of seafloor spreading was proposed in 1960 by
A) Alfred Wegener.
B) Harry Hess.
C) Albert Einstein.
D) Andrija Mohorovicic.
Intrusive igneous rock formations that cut more or less vertically across older
formations are said to be ______________.
A) recordant
B) discordant
C) concordant
D) precordant
An element that is malleable, ductile, and a good conductor of heat and electricity
would be classified as a
A) metalloid.
B) semimetal.
C) metal.
D) nonmetal.
The periodic law states that the properties of elements are periodic functions of their
atomic
A) radii.
B) shells.
C) numbers.
D) masses.
In organic molecules, a chlorine atom will normally form how many bonds?
A) 2
B) 3
C) 4
D) 1
E) 0
An example of igneous rock is
A) marble.
B) shale.
C) slate.
D) granite.
When a meteor strikes Earth's surface, it is called a(n) ______________.
A) asteroid
B) star
C) planet
D) meteorite
E) ball
Moonquakes are believed to have caused the Moon's
A) rays.
B) craters.
C) rills
D) plains (maria).
A watermelon is a good example of
A) a compound.
B) an element.
C) a homogeneous mixture.
D) a heterogeneous mixture.
Electronegativity increases ______________ across a period and ______________ in a
group.
A) right to left; bottom to top
B) left to right; top to bottom
C) right to left; top to bottom
D) left to right; bottom to top
A liquid crystal display (LCD) using a "twisting" effect in the display involves
A) polarization.
B) interference.
C) refraction.
D) diffraction.
Velocity is similar to speed, but a ________ is also involved in velocity.
A) acceleration
B) direction
C) position
D) scalar
Two equal and opposite forces of 3.0 N act on an object. The unbalanced force on the
object
A) is 3.0 N.
B) is 0 N.
C) is 5 N.
D) is 6 N.
E) cannot be determined from given information.
A ferromagnetic material is magnetized by the alignment of
A) domains.
B) atoms.
C) single magnetic dipoles.
D) poles.
The 90W longitude meridian is the center of the ______________ Standard Time zone
in the United States.
A) Pacific
B) Mountain
C) Eastern
D) Central
The Sun's energy is generated from the fusion of
A) uranium to form lead, Pb.
B) helium nuclei to form carbon nuclei.
C) hydrogen nuclei to form helium nuclei.
D) carbon nuclei to form magnesium nuclei.
Which of the following is a strong acid?
A) Citric acid
B) Nitric acid
C) Phosphoric acid
D) Acetic acid
Polymers are formed from fundamental repeating units called
A) groups.
B) amino acids.
C) complexes.
D) monomers.
Studies of remanent magnetism in rocks spreading from the Mid-Atlantic Ridge reveal
symmetric bands of magnetic anomalies. These anomalies provide
A) support for the idea of continental drift.
B) evidence of Earth's magnetic pole reversals.
C) both (A) and (B).
D) neither (A) nor (B).
The longest day (daylight) of the year for the Northern Hemisphere occurs at the time
of the
A) autumnal equinox.
B) vernal equinox.
C) winter solstice.
D) summer solstice.
For an endothermic reaction, the energy barrier is ______________ on the reactant side
than on the product side.
A) greater
B) not different in size
C) smaller
Which of the following compounds would you expect to be soluble in water?
A) PbCO3
B) Ag2CO3
C) CuCO3
D) K2CO3
The impact of meteorites on the Moon has caused
A) craters only.
B) rays only.
C) rills only.
D) both rays and craters.
Compounds tend to be ______________ compounds if they are formed from two or
more nonmetals.
A) covalent
B) organic
C) polar
D) ionic
The Andes are examples of which type of mountain?
A) Fault-block
B) Volcanic
C) Fold
D) None of these
Which of Jupiter's moons is believed to be covered with water ice and possibly have life
sustaining conditions?
A) Io
B) Europa
C) Ganymede
D) Callisto
Which of the following radiations has the longest wavelength?
A) Infrared
B) Visible
C) Ultraviolet
D) X-rays
A system of 12 electrons and 11 protons has a net charge of
A) "1.6 x 10-19 C.
B) 1.6 x 10-19 C.
C) 16.0 x 10-19 C.
D) "1.0 x 10-19 C.
E) "16.0 x 10-19 C.
The molarity of a solution is the number of moles of solute per liter of ____________.
In the metric mks system of units, the letter m stands for ______________.
Niels Bohr postulated that the hydrogen electron radiates energy only when it makes
a(n) ______________ from one allowed orbit to another.
If a radionuclide has a half-life of 8 h, ______________ half-lives would go by during
40 h.
The softest mineral on the Mohs hardness scale is named ______________.
The natural sciences are divided into physical sciences and ________________
sciences.
The principle that states that the exact position and the velocity of an object can never
be known simultaneously is called ______________ principle.
Eras are divided first into smaller time units called ______________.
Longitude can be defined as the angular measurement, in degrees, east or west of the
______________ meridian.
Short-term and long-term effects of radiation on the health of the recipient are called
______________ effects.
When an acid reacts with a base, the products are ______________ and a salt.
Perform the operation of 157.98/0.498, and report the result with the proper number of
significant figures in standard powers-of-10 notation.
The most important acid involved in chemical weathering is ______________ acid.
A(n) ______________ covalent bond is one in which the electrons are shared
unequally.
An acceleration is evidence of ______________.
A force of 7.2 N acting on a 1.0-kg object initially at rest moves it through a parallel
distance of 2.5 m. Neglecting friction, what is the speed of the object when it is moved
2.5 m?
A lava flow radiometrically dated at 300 million years lies just below sedimentary layer
A and just above sedimentary layer B. What can be said of the ages of beds A and B?
The dipole arrow in an SSe bond would point toward the ______________ atom.
