A cola drink is a good example of
A) a compound.
B) a heterogeneous mixture.
C) a homogeneous mixture.
D) an element.
What is the formula of a compound formed from the ions M1+ and X3-?
A) M3X
B) MX3
C) MX
D) None of these
The greater the mass of a star, the _______________ it moves through its life cycle.
A) faster
B) slower
C) Neither of these; mass has no effect on the life cycle of a star.
Charged particles from the Sun enter Earth’s atmosphere close to the magnetic poles
and cause
A) global cooling.
B) global warming.
C) auroras.
D) ozone depletion.
In a given period, the element of which group has the highest ionization energy?
A) 2A
B) 8A
C) 7A
D) 1A
Starting with a sample of pure parent radionuclide, what would be the ratio of the
parent radionuclide to its daughter after one half-life has elapsed?
A) 1 to 1
B) 1 to 2
C) 1/2 to 1
D) 2 to 1
Which isotope of hydrogen is radioactive?
A) Protium
B) Tritium
C) Deuterium
D) Hydronium
By definition, the addition of oxygen to a substance is called
A) neutralization.
B) reduction.
C) oxidation.
D) displacement.
A chemical reaction generally has a great effect on an atom’s
A) nuclear structure.
B) mass.
C) nuclear binding energy.
D) electron configuration.
An object is placed 20 cm in front of a concave spherical mirror. Sketch ray diagrams
and give the general characteristics of the images for mirrors with radii of curvature of
(a) R= 30 cm and (b) R= 10 cm.
The most important acid involved in chemical weathering is
A) carbonic acid.
B) sulfuric acid.
C) hydrochloric acid.
D) none of these.
The sedimentary rock known as ______________ consists of rounded pebbles
cemented together by silica, calcium carbonate, or iron oxide.
A) conglomerate
B) breccia
C) limestone
D) shale
The standard unit of mass in the mks system is the
A) meter
B) kilogram
C) pound
D) second
E) gram
An equilibrium between solute dissolving and solute crystallizing is characteristic of
which of the following solution types?
A) Saturated
B) Unsaturated
C) Supersaturated
D) Concentrated
When the equation Sb2S3+ HCl SbCl3+ H2S is balanced, the coefficient of
H2S is
A) 3.
B) 1.
C) 2.
D) 4.
An amount of fissionable material that will notsustain a chain reaction is called
A) a subatomic mass.
B) a subisotopic mass.
C) a subcritical mass.
D) none of these.
In the liquid phase, covalent compounds generally conduct electricity
A) not at all.
B) very well.
C) better than metals.
D) better than ionic compounds in the liquid phase.
If it is 10:00 A.M. EST in Washington, D.C., what is the time in San Diego, California,
the longitude of which is 45 more westerly?
A) 1:00 P.M. PST
B) 7:00 A.M. PST
C) 10:00 A.M. PST
D) 9:00 A.M. PST
Rain drops that freeze prior to striking the warm ground is a(n) ______________ storm.
A) hail
B) rain
C) ice
D) snow
The constant G that appears in the equation F = Gm1m2/r2 is
A) smaller on the Moon than on Earth.
B) the force of gravity.
C) equal to g.
D) the acceleration due to gravity.
E) a universal constant.
Saturn’s moon named ______________ is the second largest moon in the solar system.
A) Titan
B) Europa
C) Ganymede
D) Phobos
E) Diamos
The existence of the Ring of Fire is best explained by the
A) theory of plate tectonics.
B) principle of superposition.
C) concept of uniformitarianism.
D) law of catastrophism.
It is nottrue that the neutrino
A) is an elementary particle.
B) interacts extensively with other particles.
C) has no electric charge.
D) travels at or near the speed of light.
The number of daylight hours at 35N is greatest during the month of
A) May.
B) August.
C) June.
D) July.
Every square inch of our body, at sea level, sustains ______________ of atmospheric
pressure.
A) 14.7 lb
B) 1.47 g
C) 14.7 g
D) 1.47 lb
The saying “The present is the key to the past” isa simple way to state the basic
geologic concept called ______________.
A) presentarianism
B) prepostanarism
C) uniformitarianism
D) formitarianism
Each whole-number step on the Richter scale represents about how many times more
energy release that the preceding whole-number step?
A) 10
B) 32
C) 18
D) 2
What is the name of the Sun’s outermost solar atmosphere, which can be seen during a
solar eclipse?
A) Solar wind
B) Heliosphere
C) Photosphere
D) Corona
White dwarfs are relatively
A) hot and dim.
B) cool and dim.
C) hot and bright.
D) cool and bright.
Isolated, submarine, volcanic mountains are known as
A) reefs.
B) atolls.
C) seamounts.
D) spits.
In organic molecules, a oxygen atom will normally form how many bonds?
A) 0
B) 1
C) 2
D) 3
E) 4
For an ohmic conductor, current is
A) directly proportional to voltage.
B) directly proportional to resistance.
C) independent of resistance.
D) independent of voltage.
Which of the following is a weak base?
A) NH3
B) NaOH
C) KOH
D) Ca(OH)2
A diverging lens produces an image of a real object. This image is
A) reduced, upright, and virtual.
B) enlarged, inverted, and real.
C) reduced, inverted, and virtual.
D) enlarged, upright, and real.
E) enlarged, upright, and virtual.
The bob of a simple pendulum is 0.50 m above the floor at its lowest position. Calculate
the maximum speed of the bob when it is held at a maximum height of 2.5 m and
released.
The saying “The present is the key to the past” isa simple way to state the basic
geologic concept of ______________.
A large body of permeable rock or soil through which groundwater moves is called a(n)
______________.
The waveform of interfering waves is described by the principle of ______________.
Describe whether the Sun rises earlier or later as the days pass during the period from
June 15 to July 1 for people in Hawaii (general latitude, 20N).
When at home during a tornado warning, you should seek shelter in the
______________ of the building.
The fundamental silicon-oxygen compound is silicon dioxide, which is also called
_____________.
The loss of oxygen or gain of electrons by an atom or ion is called ______________.
Calculate the centripetal force on a 3.0-kg object moving in a horizontal circular path of
20-m radius with a speed of 8.0 m/s.
Changes that do notalter the chemical composition of a substance are called
______________ changes.
Folded rock layers that resemble a trough are called ______________.
When an acid reacts with a carbonate or hydrogen carbonate, the products are
____________, carbon dioxide, and a salt.
For Newton’s third law, the action and reaction forces are equal in ______________ and
opposite in direction.
The concept of matter waves reflects the observation that particles such as electrons
sometimes act like ______________.
The process of matching up rock layers in different localities by the use of index fossils
or other means is called ______________.