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Question
What is an organic compound?A) any molecule that is made mostly of carbon with no metals in it
B) compound grown with organic farming methods
C) any compound isolated from living organisms
D) any compound where there are metals bound to other types of atoms
E) anything that is a salt obtained from organic creatures
Answer
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Related questions
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Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.
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When the temperature of a fixed volume of air initially at 0 C is lowered by 1 degree, its pressure
A) decreases by 1/273.
B) decreases by 100/273.
C) increases by 1/273.
D) increases by 100/273.
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Which of these is the smallest?
A) 1 Celsius degree
B) 1 kelvin
C) 1 Fahrenheit degree
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A) Celsius
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C) Kelvin
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E) none of the above
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A) kinetic energy.
B) potential energy.
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If water had a lower specific heat capacity, would ponds and lakes be more or less likely to freeze in winter?
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Distinguish between the concepts of thermal energy, temperature, and heat.
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A) surface of bodies of water.
B) layer of water slightly below the surface.
C) bottom of bodies of water.
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Water at 4C will expand when it is slightly
A) cooled.
B) warmed.
C) both of these
D) none of the above
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If water at 0C slightly increases in temperature, the water
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If water at 20C slightly increases in temperature, the water
A) expands.
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The operation of a bimetallic strip relies on differences in
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Q:
A kg of 40C water and a kg of 20C water, after being mixed, have a temperature of 30C. However, the final temperature of a 1-kg iron block at 40C placed into 1 kg of water at 20C is
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A) poor conductivity.
B) vast supply of thermal energy.
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As entropy in a system increases, energy within the system
A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
D) moves toward destruction.
Q:
When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
Q:
Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
C) Third law
D) all of the above
Q:
Which law of thermodynamics states that no system can reach absolute zero?
A) First law
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Q:
At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point is
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B) nearer the Moon.
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Two objects move toward each other due to gravity. As the objects get closer and closer, the acceleration of each
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Q:
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A) less the gravitational force between them.
B) more the gravitational force between them.
C) constancy of the force between them.
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A) one-quarter.
B) half as much.
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D) four times as much.
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If Earth's mass somehow decreased with no change in its radius, your weight would
A) decrease also.
B) increase.
C) remain the same.
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Newton discovered
A) gravity.
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C) neither of these
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A) go into circular orbit about Earth.
B) rise and fall back to Earth's surface.
C) follow an uncertain path.
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An Earth satellite in an elliptical orbit travels slowest when it is
A) nearest the Earth.
B) farthest from the Earth.
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An Earth satellite in an elliptical orbit travels fastest when it is
A) nearest the Earth.
B) farthest from the Earth.
C) neither of these
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From Earth, one satellite appears to overtake another. The faster satellite that is seen to overtake the other is
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B) lower.
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The fastest moving planet in a solar system is the
A) smallest planet.
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C) planet nearest the Sun.
D) planet farthest from the Sun.
E) none of the above