The Kinetic Theory of Matter

Practice Test
  1.The CO2 molecule is _____________.  
  a.   linear  
  b.   pyramidal  
  c.   trigonal planar  
  d.   hexagonal  
  2.In general, atomic size ___________ from left to right across a period.  
  a.   increases  
  b.   decreases  
  c.   increases, then decreases  
  d.   remains the same  
  3.n- and p-type semiconductors may be combined to form _____________.  
  a.   transistors  
  b.   vacuum tubes  
  c.   cathode-ray tubes  
  d.   diodes  

  a.   violet  
  b.   green  
  c.   blue  
  d.   red  
  5.The elements in Groups 1, 2, and 13-17 are called the _____________.  
  a.   noble gases  
  b.   alkali metals  
  c.   main group elements  
  d.   transition elements  
  6.The arrangement of electron pairs around each of the two carbon atoms in the ethene molecule, C2H4, is best described as _________________.  
  a.   tetrahedral  
  b.   trigonal planar  
  c.   linear  
  d.   square planar  
  7.Increasing a liquid's temperature causes its vapor pressure to ___________.  
  a.   decrease  
  b.   remain constant  
  c.   change to solid  
  d.   increase  
  8.Which pair of elements would you expect to have similar properties?  
  a.   Mg and Ti  
  b.   Si and Ge  
  c.   F and Ne  
  d.   Li and Fe  
  9.What characteristic do atoms in the same group of elements share?  
  a.   The have the same number of electron orbitals.  
  b.   They have similar physical properties.  
  c.   They have the same atomic mass.  
  d.   They have the same number of valence electrons.  
  10.In general, electronegativity ___________ atomic number within a period.  
  a.   is inversely proportional to  
  b.   decreases with  
  c.   increases with  
  d.   remains constant with  
  11.How many electrons may be contained in a p sublevel?  
  a.   ten  
  b.   six  
  c.   eight  
  d.   three  
  12.These two Group 15 elements are important components of many fertilizers.  
  a.   bismuth and phosphorus  
  b.   antimony and arsenic  
  c.   nitrogen and arsenic  
  d.   nitrogen and phosphorus  
  13.Covalent bonding results when this element reacts with fluorine.  
  a.   potassium  
  b.   oxygen  
  c.   lithium  
  d.   iron  
  14.Energy sublevels are designated _____________.  
  a.   a, b, c, and d  
  b.   s, p, d, and f  
  c.   1, 2, 3, and 4  
  d.   x, y, and z  
  15.This transition element is commonly used as a coating on iron and steel to prevent corrosion.  
  a.   scandium  
  b.   gold  
  c.   zinc  
  d.   niobium  
  16.The statement that the physical and chemical properties of the elements repeat in a regular pattern when they are arranged in order of increasing atomic number is known as the ______________.  
  a.   Mendeleev theory  
  b.   periodic law  
  c.   Dobereiner's hypothesis  
  d.   Group theory  
  17.The constant, random motion of tiny chunks of matter is called _________________.  
  a.   linear motion  
  b.   Brownian motion  
  c.   parabolic trajectory  
  d.   kinetic motion  
  18.At the same temperature, a steam burn may be more severe than a water burn because of water's high _______________________.  
  a.   polarity  
  b.   mass  
  c.   density  
  d.   heat of vaporization  
  19._______________ is a measure of the size of an atom.  
  a.   Atomic radius  
  b.   Number of electrons  
  c.   Nuclear charge  
  d.   Oxidation number  
  20.Gas particles _______________ kinetic energy when they collide with other particles or the walls of their container.  
  a.   gain some  
  b.   lose some  
  c.   lose no  
  d.   gain much  

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