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What is the name of the following compound?
NaF
A) sodium fluoride
B) natural fosfate
C) natrium fluoride
D) nitrogen afleck
E) sodium phosphide
Answer:
The source of large icebergs is
A) glaciers.
B) sea ice.
C) ice and snowstorms at high latitudes.
D) summer thawing.
Answer:
The temperatures in a fractionating tower at an oil refinery are important, but so are the
pressures. Where might the pressure in a fractional distillation tower be greatest, at the
bottom or at the top? Defend your answer.
A) The pressure is greatest at the bottom because the higher temperature means a
greater number of vaporized molecules.
B) The pressure is greatest at the top because the higher temperature means a greater
number of vaporized molecules.
C) The pressure is greatest at the bottom because the lower temperature means a greater
number of vaporized molecules.
D) The pressure is greatest at the top because the lower temperature means a greater
number of vaporized molecules.
Answer:
An ideal Polaroid will transmit 50% of nonpolarized incident light. How much light is
transmitted by two ideal Polaroids oriented with their axes parallel to each other?
A) 0%
B) 50%
C) 100%
D) between 0% and 50%
E) between 50% and 100%
Answer:
If an atom has 104 electrons, 157 neutrons, and 104 protons, what is its approximate
atomic mass?
A) The approximate atomic mass is 365.
B) The approximate atomic mass is 261.
C) The approximate atomic mass is 157.
D) The approximate atomic mass is cannot be determined with the information given.
Answer:
Compared to the density of a kilogram of feathers, the density of a kilogram of lead is
A) less.
B) greater.
C) the same.
Answer:
What is the main tenet of Plank's quantum hypothesis?
A) Energy comes in discrete packets of a certain minimum size.
B) Energy is composed of subatomic particles called quanta.
C) Energy is a continuum, but light is quantized.
D) Energy can be converted into matter through nuclear quanta.
E) Light is composed of waves that exist only at certain quantum fundamental
frequencies.
Answer:
Should the periodic table be memorized? Why or why not?
A) Yes. Like the alphabet, we need to memorize the periodic table in order to easily
write the language of chemistry.
B) Yes. Without memorizing the periodic table, one would not have any real
understanding of how and why chemical compounds are put together.
C) No. The periodic table changes every year. Memorizing it would be a waste of time.
D) No. The periodic table is a reference to be used, not memorized.
Answer:
The lithosphere includes
A) continental and oceanic crust.
B) the crust and the upper part of the mantle.
C) part of the mantle and the crust.
D) continental and oceanic crust and the upper part of the mantle.
Answer:
Which of the above molecules is an aldehyde?
A) a
B) b
C) c
D) d
E) none of the above
Answer:
If the relative mass of a pingpong ball is 1/20 that of a golf ball, how many pingpong
balls would you need to equal the mass of two golf balls?
A) 40
B) 20
C) 24
D) 100
E) 6.022 1023
Answer:
Electrical resistance is greater for
A) dry skin.
B) wet skin.
C) both the same
Answer:
You drive your car along the highway at a constant 60 km/h and apply the brakes until
the car slows to 40 km/h. If at that moment you suddenly release the brakes, the car
tends to
A) momentarily regain its higher initial speed.
B) continue moving at 40 km/h.
C) decrease in speed if no other forces act.
Answer:
The most energy per unit mass can be extracted from
A) coal.
B) petroleum.
C) natural gas.
D) uranium.
Answer:
Seasons here are Earth are a result of
A) the rotation of our planet about its axis.
B) the revolution of our planet around the Sun.
C) the movement of our planet within the Milky Way.
D) the tilt of Earth's axis.
Answer:
Classify the following bonds as ionic, covalent, or neither (O, atomic number 8; F,
atomic number 9; Na, atomic number 11; Cl, atomic number 17; U, atomic number 92).
O with F Ca with Cl Na with Na
A) covalent, ionic, covalent
B) ionic, covalent, neither
C) neither, ionic, covalent
D) covalent, ionic, neither
Answer:
Many of the macroscopic properties of a compound depend on
A) how the atoms of the molecules are held together.
B) the mass of the constituent atoms.
C) the number of nucleons present in the sample.
D) the size of the sample.
E) how the atoms absorb light and the shape of the orbitals.
Answer:
Compared with an alcohol barometer, the column height for a mercury barometer
would be
A) lower.
B) higher.
C) the same.
Answer:
The parts of Saturn's rings with the greatest rotational speed are the
A) inner parts.
B) outer parts.
C) Neither, for all parts of Saturn's rings rotate equally.
Answer:
The ionosphere is an electrified ion-rich area
A) in the uppermost troposphere.
B) where atoms lose their electrons and are negatively charged.
C) where air density and solar radiation is low.
D) within the uppermost mesosphere and thermosphere.
Answer:
If one had the opportunity to walk on Triton, Neptune's largest moon, what would you
observe the geysers to be spewing?
A) liquid nitrogen
B) liquid hydrogen
C) liquid oxygen
D) liquid water
Answer:
Water in a confined aquifer is
A) freely flowing.
B) under pressure.
C) recharge.
D) discharge.
Answer:
Light changes direction when traveling from air into glass due to changes in light's
A) intensity.
B) wavelength.
C) frequency.
D) velocity.
E) amplitude.
Answer:
In general, when we refer to the time of the "Ice Age" we are referring to the
A) Jurassic.
B) Tertiary era.
C) Pleistocene epoch.
D) Pliocene era.
Answer:
If you jump straight up while inside a fast-moving train that gains speed, you land
A) slightly ahead of your original position.
B) at your original position.
C) slightly behind your original position.
Answer:
The Trojans, Greeks, and Hildas are in orbit around
A) the Sun.
B) Jupiter.
C) Saturn.
D) Uranus.
Answer:
Like kinds of magnetic poles repel while unlike kinds of magnetic poles
A) attract.
B) repel also.
C) may attract or repel.
Answer:
In a muggy region, the extra warmth you often feel is mainly due to
A) evaporation.
B) condensation.
C) sublimation.
D) none of the above
Answer:
Your weight is equal to mg when you are
A) firmly supported on a horizontal surface and in equilibrium.
B) in Earth's gravitational field.
C) anywhere except in Earth's orbit.
D) all of the above
Answer:
What moves from place to place in wave motion is
A) energy.
B) momentum.
C) pressure.
D) matter.
Answer:
The following set of redox reactions takes place as shown.
Container A Container B
Fe → Fe+2 + 2e- Cu +2 + 2e- → Cu
If you had two containers filled with the ion solution described above with a wire
connecting a piece of iron (in container A) and a piece of copper (in container B) and a
salt-bridge connecting the two containers, which way do the positive ions in the
salt-bridge flow?
A) There is no flow of positive ions in the salt-bridge.
B) The positive ions flow from container A to container B.
C) The positive ions flow from container B to container A.
D) The positive ions flow back and forth between the two containers.
E) The ions only move in the containers they originate in.
Answer:
The voltage across the input terminals of a transformer is 110 V. The primary coil has
50 loops and the secondary has 25 loops. The output is
A) 25 V.
B) 55 V.
C) 110 V.
D) 220 V.
E) none of the above
Answer:
