The Kinetic Theory of Matter

Practice Test
      
  1.The underlying reason that some periods have eighteen elements is that the combined _______ sublevels may contain 18 electrons.  
  a.   s, p, and d  
  b.   d and f  
  c.   s, p, d, and f  
  d.   p and d  
      
  2.This element is a halogen.  
  a.   nitrogen  
  b.   bromine  
  c.   carbon  
  d.   oxygen  
      
  3.The temperature of a substance _________________ as its heat of fusion is added to melt it.  
  a.   decreases  
  b.   remains at 0 K  
  c.   remains relatively constant  
  d.   increases rapidly  
      
  4.The two rows beneath the main body of the periodic table contain the _________________.  
  a.   noble gases  
  b.   alkali metals  
  c.   inner transition elements  
  d.   halogens  
      
  5.The elements in Groups 1, 2, and 13-17 are called the _____________.  
  a.   alkali metals  
  b.   main group elements  
  c.   transition elements  
  d.   noble gases  
      
  6.The arrangement of electron pairs around each of the two carbon atoms in the ethene molecule, C2H4, is best described as _________________.  
  a.   trigonal planar  
  b.   square planar  
  c.   linear  
  d.   tetrahedral  
      
  7.Gas particles _______________ kinetic energy when they collide with other particles or the walls of their container.  
  a.   gain some  
  b.   lose no  
  c.   gain much  
  d.   lose some  
      
  8.These elements are soft, silvery metals and good conductors of heat and electricity.  
  a.   transition elements  
  b.   alkali metals  
  c.   halogens  
  d.   metalloids  
      
  9.According to the kinetic-molecular theory, which of these describes a gas?  
  a.   large particles in constant, random motion  
  b.   small particles in constant, random motion  
  c.   small particles far apart in uniform motion  
  d.   large particles far apart in uniform motion  
      
  10.The CO2 molecule is _____________.  
  a.   hexagonal  
  b.   trigonal planar  
  c.   pyramidal  
  d.   linear  
      
  11.This scientist arranged some elements in triads based on their atomic masses and other properties.  
  a.   Newlands  
  b.   Dobereiner  
  c.   Einstein  
  d.   Mendeleev  
      
  12.This transition element is commonly used as a coating on iron and steel to prevent corrosion.  
  a.   zinc  
  b.   scandium  
  c.   niobium  
  d.   gold  
      
  13.What electron configuration describes the outermost energy level of a molybdenum atom?  
  a.   5s2  
  b.   5d4  
  c.   4d4  
  d.   6p6  
      
  14.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.  
      
  15.From beryllium to radium, you would expect the chemical reactivities of the elements in Group 2 to ____________.  
  a.   remain the same  
  b.   decrease  
  c.   increase, then decrease  
  d.   increase  
      
  16.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  
      
  17.When strontium atoms react with oxygen atoms, they form __________ bonds.  
  a.   triple  
  b.   covalent  
  c.   polar covalent  
  d.   ionic  
      
  18.This noble gas is used to carry scientific instruments into the upper atmosphere.  
  a.   helium  
  b.   krypton  
  c.   xenon  
  d.   argon  
      
  19. Because liquid molecules are much closer than gas molecules, liquids are much less ____________ than gases.  
  a.   lattice-like  
  b.   massive  
  c.   compressible  
  d.   flexible  
      
  20.In general, _________ are malleable and ductile.  
  a.   metalloids  
  b.   noble gases  
  c.   nonmetals  
  d.   metals  

 
   
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