The Kinetic Theory of Matter

Practice Test
  1.The light emitted by the gas in a neon sign is _________________.  
  a.   a filament  
  b.   an electron  
  c.   an incandescent light  
  d.   an emission spectrum  
  2.When materials called _____________ melt, they lose their rigid organization in only one or two dimensions.  
  a.   liquids  
  b.   solid crystals.  
  c.   solids  
  d.   liquid crystals  
  3.Mendeleev saw that properties of the elements repeated in an orderly way when he organized them according to ______________.  
  a.   decreasing atomic number  
  b.   increasing atomic size  
  c.   increasing atomic mass  
  d.   increasing volume  
  4.The motions of particles cause them to spread out in a process known as ____________.  
  a.   condensation  
  b.   evaporation  
  c.   aeration  
  d.   diffusion  
  5.An arrow points in the direction of the _______________ of a polar covalent molecule.  
  a.   negative end  
  b.   positive end  
  c.   bottom  
  d.   center  
  6.The third energy level may have ____________ sublevels.  
  a.   two  
  b.   eight  
  c.   four  
  d.   three  
  7.The shielding effect is the tendency of inner energy level electrons to block the attraction of the nucleus for ________________.  
  a.   protons  
  b.   other atoms  
  c.   valence electrons  
  d.   neutrons  
  8.Many transition elements have multiple positive oxidation states because their atoms can lose some of their _______________.  
  a.   s electrons  
  b.   nuclear protons  
  c.   p electrons  
  d.   d electrons  
  9.These groups contain metals, nonmetals, and metalloids.  
  a.   14 , 15  
  b.   13-18  
  c.   17, 18  
  d.   1, 2  
  10.The CO2 molecule is _____________.  
  a.   hexagonal  
  b.   pyramidal  
  c.   trigonal planar  
  d.   linear  
  11.These elements have six electrons in their outermost energy levels.  
  a.   He, Ne, and Ar  
  b.   O, S, and Se  
  c.   Cr, Mo, and W  
  d.   Cr, Mn, and Fe  
  12.The energy required to convert 1 kg of a liquid substance at its boiling point to 1 kg of gas, is called the substance's _________________.  
  a.   joule of heat  
  b.   heat of vaporization  
  c.   sublimation point  
  d.   energy of condensation  
  13.The space in which there is a 95% probability of finding an electron is called __________.  
  a.   an energy sublevel  
  b.   an orbital  
  c.   an electron sphere  
  d.   an energy level  
  14.______________ is a model of gas behavior that is valid over a wide range of conditions.  
  a.   An ideal gas  
  b.   The gas hypothesis  
  c.   Pressure  
  d.   Volume  
  15.This transition element is used in many barometers and thermometers.  
  a.   copper  
  b.   iron  
  c.   mercury  
  d.   titanium  
  16.This halogen is absorbed readily by the thyroid gland.  
  a.   iodine  
  b.   chlorine  
  c.   bromine  
  d.   fluorine  
  17.Lanthanides and actinides are known as _________________.  
  a.   metalloids  
  b.   inner transition elements  
  c.   noble gases  
  d.   halogens  
  18.The arrangement of electron pairs around each of the two carbon atoms in the ethene molecule, C2H4, is best described as _________________.  
  a.   square planar  
  b.   trigonal planar  
  c.   linear  
  d.   tetrahedral  
  19.Why was Mendeleev's periodic table widely accepted?  
  a.   He predicted the existence and properties of undiscovered elements.  
  b.   His periodic table listed all of the elements in the correct order.  
  c.   He was the first to notice a pattern of similar properties among elements.  
  d.   He organized the first 14 known elements.  
  20.The two rows beneath the main body of the periodic table contain the _________________.  
  a.   inner transition elements  
  b.   alkali metals  
  c.   halogens  
  d.   noble gases  

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