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Chapter 5: The Periodic Table

Practice Test
      
  1.Why were health experts in Europe worried about strontium-90 released by the Chernobyl disaster?  
  a.   Strontium is the most toxic substance on Earth.  
  d.   All of the above.  
  Hint    
      
  2.What are isotopes?  
  a.   elements with the same number of neutrons, but different number of protons  
  b.   elements with the same atomic number, but different mass numbers  
  c.   elements with different atomic numbers, but with the same mass number  
  d.   elements with the same number of protons and neutrons  
  Hint    
      
  3.What is the most active nonmetal?  
  a.   fluorine  
  b.   cesium  
  c.   helium  
  d.   carbon  
  Hint    
      
  4.There are 6 dots on the dot diagram for the element tellurium. What Family of the periodic table is tellurium in?  
  a.   52  
  b.   5  
  c.   16  
  d.   6  
  Hint    
      
  5.The orange-yellow glow of a street lamp is produced by what alkali metal?  
  a.   sulfur  
  b.   mercury  
  c.   sodium  
  d.   hydrogen  
  Hint    
      
  6.An atom of beryllium has 4 protons and 5 neutrons. What is the mass number of this atom?  
  a.   9  
  b.   5  
  c.   20  
  d.   4  
  Hint    
      
  7.On the periodic table, what is a period?  
  a.   a group of elements with common chemical and physical properties  
  b.   a group of elements that all occur in the same place in nature  
  c.   a group of elements with the same number of protons and neutrons  
  d.   a row of elements that repeats a periodic trend of chemical properties  
  Hint    
      
  8.What is a family of elements?  
  a.   a group of elements that all occur in the same place in nature  
  b.   a row of elements that repeats a periodic trend of chemical properties  
  c.   a group of elements with common chemical and physical properties  
  d.   a group of elements with the same number of protons and neutrons  
  Hint    
      
  9.What is the atomic number of an atom?  
  a.   the number of protons in an atom  
  b.   the average mass of the isotopes of an element  
  c.   the number of protons and neutrons in an atom  
  d.   the number of neutrons in an atom  
  Hint    
      
  10.A certain element is located in Family 1 in the last period. What might the properties of this element be?  
  a.   nonmetallic properties, not reactive  
  b.   nonmetallic properties, highly reactive  
  c.   metallic properties, not reactive  
  d.   metallic properties, highly reactive  
  Hint    
      
  11.Elements of Family 17 are most likely to combine with elements of what other family?  
  a.   Family 18  
  b.   Family 16  
  c.   Family 1  
  d.   Family 17 elements do not combine with other elements.  
  Hint    
      
  12.What alkaline earth metal is essential in building healthy strong bones?  
  a.   phosphorus  
  b.   strontium  
  c.   calcium  
  d.   potassium  
  Hint    
      
  13.How did Mendeleev organize the elements on his periodic table?  
  a.   in order of increasing mass  
  b.   in order of increasing number of neutrons  
  c.   calcium  
  d.   All of the above.  
  Hint    
      
  14.Where do transition elements fall on the periodic table?  
  a.   elements just left of the stair step line on the periodic table  
  b.   elements in Families 3 through 12  
  c.   elements in Family 18  
  d.   elements in Families 1 and 2  
  Hint    
      
  15.What is atomic mass?  
  a.   the combined number of atomic masses of the naturally occurring isotopes  
  b.   the sum of the mass numbers of the naturally occurring isotopes  
  c.   the average of the atomic numbers of the isotopes found in nature  
  d.   the average mass of the isotopes of an element found in nature  
  Hint    

 
   
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