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The "Cambrian explosion" refers to the
A) great many meteorite bombardments that occurred during that time.
B) great diversity of life that blossomed during that time.
C) evolution and great diversity of blastoids during that time period.
D) numerous volcanic eruptions that took place during that time.
Answer:
What are the formula masses of water, O; propene, ; and 2-propanol, O?
A) water: 18 amu; propene: 40 amu; 2-propanol: 58 amu
B) water: 18 amu; propene: 42 amu; 2-propanol: 62 amu
C) water: 18 amu; propene: 42 amu; 2-propanol: 60 amu
D) water: 18 amu; propene: 44 amu; 2-propanol: 64 amu
Answer:
Which has the greater momentum when moving?
A) a container ship
B) a bullet
C) either of these depending on speed
Answer:
Why is a phenol more acidic than a regular alcohol?
A) Phenols have the ability to spread the negative charge that forms.
B) Phenols have the ability to readily accept the positive charge of the proton.
C) The negative charge is very concentrated on the oxygen ring of the phenol.
D) The phenol has more negative charge and therefore is more stable.
E) Phenols are not more acidic than a regular alcohol.
Answer:
How far is a light year?
A) nearly 10 trillion km
B) the distance of one Earth orbit
C) 300,000 km
D) All of the above
Answer:
An apple pie will be a net emitter of energy when its temperature is
A) higher than its surroundings.
B) lower than its surroundings.
C) neither of these
Answer:
A karate expert executes a swift blow and breaks a cement block with her bare hand.
The magnitude of the force on her hand is
A) zero.
B) less than the force applied to the cement block.
C) the same as the force applied to the block.
D) more than the force applied to the block.
E) need more information
Answer:
List the following compounds in order of least oxidized to most oxidized.
A) a < b < c < d
B) b < a < c < d
C) c < d < a < b
D) b < a < d < c
Answer:
How many oxygen molecules are needed to make 10 carbon dioxide molecules
according to the following balanced chemical equation?
2 CO + O2 → 2 CO2
A) 5
B) 1
C) 4
D) 10
E) 2
Answer:
Which of the following is not a major influence on atmospheric circulation?
A) the Coriolis force
B) the unequal solar heating of Earth
C) the distribution of continents and oceans
D) the major topographic features on the continents
E) the local variations in gravitational acceleration
Answer:
Which of the following statements best describes the effect of heteroatoms on
hydrocarbons?
A) Heteroatoms greatly alter the chemical and physical properties of a hydrocarbon.
B) Heteroatoms have little effect on the chemical and physical properties of a
hydrocarbon.
C) Heteroatoms have very similar properties to hydrocarbons.
D) The properties of the heteroatom compounds depend only on the atom, not how it is
bonded to the hydrocarbon.
E) none of the above
Answer:
Read carefully. Twice as much as one million trillion is two million trillion. One
thousand times as much is 1000 million trillion. One million times as much is 1,000,000
million trillion, which is the same as one trillion trillion. Thus, one trillion trillion is a
million times greater than a million trillion. Got that? So how many more water
molecules than impurity molecules are there in a glass of water that is 99.9999 percent
pure?
A) 1000 (one thousand: 1 × ) more water molecules than impurities molecules
B) 1,000,000 (one million: 1 × ) more water molecules than impurities molecules
C) 1,000,000,000 (one billion: 1 × ) more water molecules than impurities molecules
D) 1,000,000,000,000,000,000 (one million trillion: 1 × ) more water molecules
than impurities molecules
Answer:
The background stars during a solar eclipse are those of constellations
A) of the opposite season.
B) seen in the nighttime sky.
C) not seen normally.
D) seen in the opposite hemisphere.
Answer:
This chapter states a link between Newton's Universal Law of Gravity and
A) biological processes.
B) chemical processes.
C) geological processes.
D) the U.S. Constitution.
E) none of the above
Answer:
Which of the following describes a nonmetal?
A) poor conductor of electricity
B) shiny
C) malleable
D) ductile
E) good conductor of heat
Answer:
A skipper on a boat notices wave crests passing the anchor chain every 5 s. The skipper
estimates the distance between crests is 15 m. What is the speed of the water waves?
A) 3 m/s
B) 5 m/s
C) 15 m/s
D) not enough information
Answer:
Electric potential is measured in units of
A) volts.
B) joules.
C) amperes.
D) watts.
E) any or all of these
Answer:
Which of the following commonly acts as a base in chemical reactions?
A) carboxylic acid
B) alcohol
C) ketone
D) amine
E) hydrocarbon
Answer:
If Earth's mass decreased to one-half its original mass with no change in radius, your
weight would
A) decrease to one-quarter.
B) decrease to one-half.
C) remain the same.
D) none of the above
Answer:
Which has the larger resistance, a 60-W or a 100-W incandescent lamp, both rated for
120-V operation?
A) 60-W lamp
B) 100-W lamp
C) both the same
Answer:
Nanotechnology looks at working with particles the size of
A) 100 microns or larger.
B) 1 to 100 nanometers, the realm of individual atoms and molecules.
C) 50 grams and smaller.
D) infinitesimally small, the size of electrons.
Answer:
Which of the following statements is not true about a neutralization reaction?
A) Water is always formed in a neutralization reaction.
B) One molecule of acid neutralizes one molecule of base.
C) A neutralization is the reaction of a hydroxide ion with a proton.
D) All of the above are true.
E) None of the above are true.
Answer:
The half-life of carbon-14 is 5730 years. A sample is found to have one-eighth the
original amount of carbon-14 in it. How old is the sample?
A) 5730 years
B) 716 years
C) 45,800 years
D) 17,200 years
E) none of the above
Answer:
Another name for the leeward slope is
A) upslope.
B) downslope.
C) rain shadow.
D) downslope and/or rain shadow.
Answer:
R = reactants P = products
For the above energy profiles, which reaction has the highest activation energy?
A) a
B) b
C) c
D) d
E) All have the same activation energy.
Answer:
Which of the following would be considered a heterogeneous mixture?
A) salad dressing
B) water
C) milk
D) vegetable oil
E) vinegar
Answer:
Passengers in a high-flying jumbo jet feel their normal weight in flight, whereas
passengers in an orbiting space vehicle do not because they are
A) beyond the main pull of Earth's gravity.
B) above the Earth's atmosphere.
C) without support forces.
D) all the above
E) none of the above
Answer:
An Earth satellite in an elliptical orbit travels slowest when it is
A) nearest the Earth.
B) farthest from the Earth.
C) neither of these
Answer:
The quantity that undergoes a red shift is
A) wave frequency.
B) wavelength.
C) both of these
D) neither of these
Answer:
Heteroatoms make a difference in the physical and chemical properties of an organic
molecule because
A) they add extra mass to the hydrocarbon structure.
B) each heteroatom has its own characteristic chemistry.
C) they can enhance the polarity of the organic molecule.
D) all of the above
Answer:
The buoyant force acting on a 1-ton blimp hovering in air is
A) zero.
B) 1 ton.
C) less than 1 ton.
D) greater than 1 ton.
Answer:
As air rises, it
A) compresses and warms.
B) compresses and cools.
C) expands and warms.
D) expands and cools.
Answer:
