Why has the model of the atom changed over time?

A.
All models of the atom created by scientists are too simple.

B.
The model of the atom changed over time because the atoms changed composition.

C.
All atoms are unstable and are continuously changing.

D.
The model of the atom changed as scientists made more accurate observations.

Question

Why has the model of the atom changed over time?  
   
 
  
 
  
 

 
 

  

  A. 
  All models of the atom created by scientists are too simple.   
   

 
 

  

  B. 
  The model of the atom changed over time because the atoms changed composition.   
   

 
 

  

  C. 
  All atoms are unstable and are continuously changing.   
   

 
 

  

  D. 
  The model of the atom changed as scientists made more accurate observations.

anonymous · Answer

C. all atoms are unstable and are continously changing

jfraser · Answer

it's not C