The Kinetic Theory of Matter

Practice Test
      
  1.What characteristic do atoms in the same group of elements share?  
  a.   They have the same number of valence electrons.  
  b.   They have the same atomic mass.  
  c.   The have the same number of electron orbitals.  
  d.   They have similar physical properties.  
      
  2.Water molecules stick together to form droplets because of their ___________.  
  a.   volumes  
  b.   polarities  
  c.   covalencies  
  d.   masses  
      
  3.Increasing a liquid's temperature causes its vapor pressure to ___________.  
  a.   increase  
  b.   decrease  
  c.   change to solid  
  d.   remain constant  
      
  4.A solid that has no regular structure is said to be ____________.  
  a.   hexagonal  
  b.   crystalline  
  c.   cubic  
  d.   amorphous  
      
  5.This element is a halogen.  
  a.   nitrogen  
  b.   bromine  
  c.   carbon  
  d.   oxygen  
      
  6.The shielding effect is the tendency of inner energy level electrons to block the attraction of the nucleus for ________________.  
  a.   valence electrons  
  b.   other atoms  
  c.   protons  
  d.   neutrons  
      
  7.What electron configuration describes the outermost energy level of a selenium atom?  
  a.   4s24d104p4  
  b.   4s24d4  
  c.   4s23d10  
  d.   4s24p4  
      
  8. This useful transition element is the major component in steel.  
  a.   nickel  
  b.   tungsten  
  c.   chromium  
  d.   iron  
      
  9.


 
  a.   blue  
  b.   red  
  c.   green  
  d.   violet  
      
  10.The _______________ states that the submicroscopic particles of all matter are in constant, random motion.  
  a.   atomic theory  
  b.   Brownian law  
  c.   molecular hypothesis  
  d.   kinetic theory  
      
  11.To prevent unintended reactions, sodium and potassium are kept in _____________.  
  a.   air  
  b.   ice  
  c.   oil  
  d.   water  
      
  12.What group of elements was unknown to Mendeleev when he first organized his periodic table?  
  a.   Group 18, the noble gases  
  b.   Group 2, the alkaline earth metals  
  c.   the transition elements  
  d.   Group 1, the alkali metals  
      
  13.In general, atomic size ___________ from top to bottom within a Group.  
  a.   increases  
  b.   increases, then decreases  
  c.   remains the same  
  d.   decreases  
      
  14.When strontium atoms react with oxygen atoms, they form __________ bonds.  
  a.   triple  
  b.   ionic  
  c.   polar covalent  
  d.   covalent  
      
  15.These two Group 15 elements are important components of many fertilizers.  
  a.   nitrogen and phosphorus  
  b.   nitrogen and arsenic  
  c.   bismuth and phosphorus  
  d.   antimony and arsenic  
      
  16.Mendeleev predicted the properties of these two elements, which were unknown at the time.  
  a.   gallium and germanium  
  b.   carbon and silicon  
  c.   silicon and aluminum  
  d.   boron and arsenic  
      
  17.The motions of particles cause them to spread out in a process known as ____________.  
  a.   diffusion  
  b.   condensation  
  c.   aeration  
  d.   evaporation  
      
  18.The number of valence electrons in a sulfur atom is __________.  
  a.   two  
  b.   four  
  c.   six  
  d.   eight  
      
  19.The CO2 molecule is _____________.  
  a.   linear  
  b.   pyramidal  
  c.   trigonal planar  
  d.   hexagonal  
      
  20.The two rows beneath the main body of the periodic table contain the _________________.  
  a.   inner transition elements  
  b.   noble gases  
  c.   halogens  
  d.   alkali metals  

 
   
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