The Kinetic Theory of Matter

Practice Test
  1.This noble gas is used to carry scientific instruments into the upper atmosphere.  
  a.   helium  
  b.   argon  
  c.   xenon  
  d.   krypton  
  2.Why was Mendeleev's periodic table widely accepted?  
  a.   He organized the first 14 known elements.  
  b.   He was the first to notice a pattern of similar properties among elements.  
  c.   He predicted the existence and properties of undiscovered elements.  
  d.   His periodic table listed all of the elements in the correct order.  
  3.Mendeleev predicted the properties of these two elements, which were unknown at the time.  
  a.   carbon and silicon  
  b.   gallium and germanium  
  c.   boron and arsenic  
  d.   silicon and aluminum  
  4.According to the kinetic-molecular theory, which of these describes a gas?  
  a.   small particles in constant, random motion  
  b.   large particles far apart in uniform motion  
  c.   large particles in constant, random motion  
  d.   small particles far apart in uniform motion  
  5.Except for helium, noble gas atoms have _________.  
  a.   octets  
  b.   duets  
  c.   quartets  
  d.   trios  
  6.The elements in Groups 1, 2, and 13-17 are called the _____________.  
  a.   alkali metals  
  b.   noble gases  
  c.   main group elements  
  d.   transition elements  
  7.The _____________ of a material is a measure of the average kinetic energy of its particles.  
  a.   temperature  
  b.   rigidity  
  c.   mass  
  d.   volume  
  8.The type of analysis based on the movements of a stationary phase and a mobile phase is called _____________.  
  a.   titration  
  b.   photography  
  c.   phase movement  
  d.   chromatography  
  9.The light emitted by the gas in a neon sign is _________________.  
  a.   an emission spectrum  
  b.   an incandescent light  
  c.   a filament  
  d.   an electron  
  10.___________ sharing of electrons results in ionic bonding.  
  a.   Slightly unequal  
  b.   Electronegative  
  c.   Highly unequal  
  d.   Equal  
  11.Heavy elements such as seaborgium are created in _____________.  
  a.   test tubes  
  b.   particle accelerators  
  c.   erlenmeyer flasks  
  d.   earthquakes  
  12.When materials called _____________ melt, they lose their rigid organization in only one or two dimensions.  
  a.   liquids  
  b.   solid crystals.  
  c.   liquid crystals  
  d.   solids  
  13.In general, atomic size ___________ from top to bottom within a Group.  
  a.   decreases  
  b.   remains the same  
  c.   increases, then decreases  
  d.   increases  
  14. Because liquid molecules are much closer than gas molecules, liquids are much less ____________ than gases.  
  a.   massive  
  b.   lattice-like  
  c.   compressible  
  d.   flexible  
  15.The arrangement of electron pairs around the nitrogen atom in the ammonia molecule, NH3, is best described as _______________.  
  a.   linear  
  b.   square planar  
  c.   pyramidal  
  d.   tetrahedral  
  16.Chemical bonding results in ________________.  
  a.   lower density  
  b.   longer bond lengths  
  c.   increased stability  
  d.   decreased stability  
  17.This transition element is used in many barometers and thermometers.  
  a.   titanium  
  b.   mercury  
  c.   iron  
  d.   copper  
  18.From beryllium to radium, you would expect the chemical reactivities of the elements in Group 2 to ____________.  
  a.   increase, then decrease  
  b.   increase  
  c.   remain the same  
  d.   decrease  
  19.The number of valence electrons in a sulfur atom is __________.  
  a.   two  
  b.   six  
  c.   eight  
  d.   four  
  20.This transition element is commonly used as a coating on iron and steel to prevent corrosion.  
  a.   niobium  
  b.   zinc  
  c.   scandium  
  d.   gold  

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