The Kinetic Theory of Matter

Practice Test
  1._______________ is a measure of the size of an atom.  
  a.   Nuclear charge  
  b.   Oxidation number  
  c.   Atomic radius  
  d.   Number of electrons  
  2.Which element is NOT suitable to dope silicon to produce an n-type semiconductor?  
  a.   arsenic  
  b.   antimony  
  c.   phosphorus  
  d.   carbon  
  3.The light emitted by the gas in a neon sign is _________________.  
  a.   an incandescent light  
  b.   an emission spectrum  
  c.   an electron  
  d.   a filament  
  4.Which pair of elements would you expect to have similar properties?  
  a.   F and Ne  
  b.   Mg and Ti  
  c.   Si and Ge  
  d.   Li and Fe  
  5.Many transition elements have multiple positive oxidation states because their atoms can lose some of their _______________.  
  a.   nuclear protons  
  b.   p electrons  
  c.   d electrons  
  d.   s electrons  
  6.Metallic sodium is obtained from NaCl through _________.  
  a.   freezing  
  b.   electrolysis  
  c.   thermal decomposition  
  d.   condensation  
  7.These two elements are liquids at room temperature and pressure.  
  a.   lithium and cesium  
  b.   silver and nitrogen  
  c.   mercury and oxygen  
  d.   mercury and bromine  
  8.A solid that has no regular structure is said to be ____________.  
  a.   crystalline  
  b.   cubic  
  c.   hexagonal  
  d.   amorphous  
  9.______ K = 100oC.  
  a.   100  
  b.   373  
  c.   273  
  d.   -460  
  10.According to the kinetic-molecular theory, which of these describes a gas?  
  a.   large particles in constant, random motion  
  b.   small particles far apart in uniform motion  
  c.   large particles far apart in uniform motion  
  d.   small particles in constant, random motion  
  11.The energy released as 1 kg of a substance _____________ at its freezing point is called its heat of fusion.  
  a.   solidifies  
  b.   freezes  
  c.   evaporates  
  d.   melts  
  12.The CO molecule is _____________________.  
  a.   linear and nonpolar  
  b.   trigonal planar and polar  
  c.   tetrahedral and nonpolar  
  d.   linear and polar  
  13.This transition element is commonly used as a coating on iron and steel to prevent corrosion.  
  a.   niobium  
  b.   scandium  
  c.   zinc  
  d.   gold  
  14.An intermediate difference in electronegativity results in a/an ___________________ bond.  
  a.   covalent  
  b.   weak  
  c.   ionic  
  d.   polar covalent  
  15.In general, electronegativity ___________ atomic number within a period.  
  a.   remains constant with  
  b.   is inversely proportional to  
  c.   decreases with  
  d.   increases with  
  16.When strontium atoms react with oxygen atoms, they form __________ bonds.  
  a.   ionic  
  b.   covalent  
  c.   polar covalent  
  d.   triple  
  17.The space in which there is a 95% probability of finding an electron is called __________.  
  a.   an energy sublevel  
  b.   an energy level  
  c.   an orbital  
  d.   an electron sphere  
  18.The fourth energy level can hold _______ more electrons than the third energy level.  
  a.   10  
  b.   14  
  c.   2  
  d.   6  
  19.These elements have some physical and chemical properties of metals and other properties of nonmetals.  
  a.   metalloids  
  b.   transition elements  
  c.   actinides  
  d.   lanthanides  
  20.The elements in Groups 1, 2, and 13-17 are called the _____________.  
  a.   alkali metals  
  b.   transition elements  
  c.   main group elements  
  d.   noble gases  

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