Which is the most common state of matter in the universe?
a. solid
b. liquid
c. gas
d. plasma
e. superfluid
[Ques. 2] What determines a fluid's resistance to objects moving through it (such as water's resistance to fish moving through water, or air resistance to hailstones)?
a. The fluid's weight.
b. The fluid's volume.
c. The fluid's viscosity.
d. The fluid's mass.
e. The fluid's temperature.
[Ques. 3] A fluid can be:
a. a liquid but not a solid or a gas.
b. a solid but not a liquid or a gas.
c. a gas but not a liquid or a solid.
d. a gas or a liquid but not a solid.
e. a liquid or a solid but not a gas.
[Ques. 4] Which best describes the property of surface tension in the examples pictured here?
a. Neighboring molecules of the liquid bond to each other, forming a flexible atomic sheet at the surface.
b. Molecules at the surface have different properties than atoms surrounded on all sides by other atoms.
c. At a surface, the interaction between air molecules and the fluid create the surface tension.
d. The surface tension pulls molecules out from the center of a liquid to the surface.
e. The surface tension only occurs at high temperatures.
[Ques. 5] Diamond is made of carbon atoms attached rigidly to each other in three directions making diamond very strong. Graphite, as found in a pencil, is easily broken under pressure. Since graphite is also made of carbon atoms, why might it have such a different property?
a. The carbon atoms in graphite form strong bonds along two-dimensional sheets but attach weakly between sheets.
b. The carbon atoms in graphite are a different form of carbon from that in diamond.
c. The surfaces of diamonds are treated to make them strong.
d. The carbon atoms in graphite are not arranged in a regular repeating pattern, so that it is not a crystal while diamond is.
e. Each carbon atom in graphite is only weakly attached to each of its neighboring carbons.
[Ques. 6] What is the definition of density?
a. The amount of volume in a standard unit of mass.
b. The amount of weight in a standard unit of volume.
c. The number of moles in a standard unit of volume.
d. The amount of mass in a standard unit of volume.
e. The amount of volume in a standard unit of weight.
[Ques. 7] Which of these is an inherent, unchanging property of any given solid or liquid material?
a. mass
b. weight
c. volume
d. shape
e. density
[Ques. 8] In the atom:
a. the positively charged nucleus attracts the negatively charged electrons.
b. the negatively charged nucleus attracts the positively charged electrons.
c. the strong nuclear force counteracts the attraction between the electrons and the nucleus.
d. the electrical forces do not act within atoms.
e. the nucleus and the electrons can either both be positive or both be negative.
[Ques. 9] The basic force that binds materials together is:
a. gravitational force.
b. nuclear force.
c. buoyant force.
d. inertial force.
e. electrical attraction.
[Ques. 10] Which is the correct order of the states of matter of a substance, from coldest to hottest?
a. solid, gas, liquid, plasma.
b. plasma, gas, liquid, solid.
c. gas, liquid, solid, plasma.
d. solid, liquid, gas, plasma.
e. plasma, liquid, gas, solid.
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