CHEM 110
Sixth Take Home Quiz

                                                                          

1. Name the three fundamental particles found in atoms.  Give 
the electrical charges of each.  Which two have masses that are 
nearly equal and are much greater than the mass of the third ?  
                                                                          
                                                                          
2. The atomic number gives the number of ____________ in the 
   __________ of an atom.  
                                                                          
3. The mass number gives the total number of __________  
and __________ in the ___________ of an atom. 
                                                                          
4. Atoms of an element which have different mass numbers are 
   called ___________.  
                                                                          
5. Give an example of an element for which there is more than one 
   abundant isotope.  
                                                                          
                                                                          
6. Give an example of an element for which there is only one 
   abundant isotope.  
                                                                          
                                                                          
7. How many protons, neutrons and electorns are in an atom of the 
most abundant isotope of each of the following elements ?  
                                                                          
            PROTONS  NEUTRONS  ELECTRONS  
    F 
                                                                          
    Au 
                                                                          
    Na 
                                                                          
    N 
                                                                          
    Al 
                                                                          
    U 


 Answers = Please work before checking