Nuclear Chemistry

Practice Test
      
  1.What is the product of an endothermic reaction in which an inorganic phosphate group is added to adenosine diphosphate?  
  a.   lactic acid  
  b.   ADP  
  c.   glucose  
  d.   ATP  
      
  2.Radioactivity is the spontaneous emission of radiation by a/an ________________.  
  a.   stable electron  
  b.   unstable atomic nucleus  
  c.   hydrogen bond  
  d.   covalent bond  
      
  3.One calorie is equal to 4.184J. How much energy in joules is supplied by a breakfast bar containing 170 nutritional calories?  
  a.   1.7 x 10 5 J  
  b.   170 J  
  c.   711 J  
  d.   7.11 x 10 5 J  
      
  4.A functional group is the part of a molecule having a specific arrangement of atoms that is largely responsible for the _______________ of the parent molecule.  
  a.   mass  
  b.   volume  
  c.   chemical behavior  
  d.   density  
      
  5.In photosynthesis, ________________ are formed.  
  a.   glucose and oxygen  
  b.   fructose and nitrogen  
  c.   sucrose and water  
  d.   glucose and carbon dioxide  
      
  6.These two types of plastics are easiest to collect and sort for recycling.  
  a.   PVC and PSEPS  
  b.   LDPE and PET  
  c.   PP and PVC  
  d.   PET and HDPE  
      
  7.The sum of all the chemical reactions necessary for the life of an organism is its ____________.  
  a.   metabolism  
  b.   locomotion  
  c.   digestion  
  d.   respiration  
      
  8.The two basic series of reactions that make up photosynthesis are called __________________.  
  a.   the light reactions and the carbon dioxide cycle  
  b.   the light reactions and the Calvin cycle  
  c.   the dark reactions and the nitrogen cycle  
  d.   the light reactions and the oxygen cycle  
      
  9.More than 95% of the atoms in your body are these four elements.  
  a.   oxygen, hydrogen, calcium, and carbon  
  b.   iron, phosphorus, carbon, and hydrogen  
  c.   hydrogen, iron, silicon, and oxygen  
  d.   oxygen, carbon, hydrogen, and nitrogen  
      
  10.This element accounts for most of the radiation to which people are exposed.  
  a.   hydrogen  
  b.   radon  
  c.   carbon  
  d.   phosphorus  
      
  11.An exothermic reaction has a ______________ H.  
  a.   negative  
  b.   positive  
  c.   high  
  d.   zero  
      
  12.An exothermic reaction is one that _______________.  
  a.   absorbs heat  
  b.   neither releases nor absorbs heat  
  c.   produces smoke  
  d.   releases heat  
      
  13.Gamma radiation produced by cobalt-60 is often used to ________________.  
  a.   produce other radioisotopes  
  b.   diagnose cancer  
  c.   destroy cancerous cells  
  d.   conduct PET scans  
      
  14.These two elements catalyze reactions that remove pollutants in typical automobile catalytic converters.  
  a.   gold and silver  
  b.   platinum and rhodium  
  c.   molybdenum and sodium  
  d.   iron and copper  
      
  15.What is the monomer in the natural polymer known as cellulose?  
  a.   sucrose  
  b.   glucose  
  c.   ribose  
  d.   methanol  
      
  16.What type of organic compound is characterized by a hydroxy functional group bonded to a carbon atom of a hydrocarbon?  
  a.   an alcohol  
  b.   octane  
  c.   an aldehyde  
  d.   carbon dioxide  
      
  17.In Einstein's famous equation E = mc2, which relates energy and mass, c represents the ___________________.  
  a.   specific heat  
  b.   speed of sound  
  c.   speed of light  
  d.   caloric content  
      
  18.Carbohydrates are made up of these three elements.  
  a.   carbon, phosphorus, and hydrogen  
  b.   carbon, calcium, and hydrogen  
  c.   carbon, nitrogen, and oxygen  
  d.   carbon, hydrogen, and oxygen  
      
  19.These particles sustain a nuclear fission chain reaction.  
  a.   alpha particles  
  b.   protons  
  c.   beta particles  
  d.   neutrons  
      
  20.The half-life of technetium-99 is 6.0 hours. How much of a 1.000-gram sample remains after 18.0 hours?  
  a.   8.000 g  
  b.   0.250 g  
  c.   0.500 g  
  d.   0.125 g  

 
   
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