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Atomic Theory

9 Questions  I  By Uvschubert
Atomic Theory
Atomic theory portion of the Virginia SOL chemistry exam.  

  
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1.  What scientist was the first to conclude through experimentation that atoms have positive charges in their nuclei?
A.
B.
C.
D.
2.  Atoms of the same element must -
A.
B.
C.
D.
3.  Phosphorus: protons   neutrons   electrons
A.
B.
C.
D.
4.  An increase in atomic number is related to an increase in atomic mass because -
A.
B.
C.
D.
5.  How many protons, neutrons, and electrons are in a neutral atom of sodium? 
A.
B.
C.
D.
6.  Isotopes of an element have different - 
A.
B.
C.
D.
7.  Radioactive iodine-131 has a half-life of eight days. The amount of a 200.0 gram sample left after 32 days would be - 
A.
B.
C.
D.
8.  Which of these conclusions can be drawn from Rutherford's experiment?
A.
B.
C.
D.
9.  How does the radioactive isotope of C-14 differ from its stable counterpart C-12?
A.
B.
C.
D.
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