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Chem

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
Relative mass of an electron   1/1840  
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How was atomic mass calculated?   The weight of an atom compared to 1/12 of a carbon 12 atom.  
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What are the types of Shells   P, F, D, S  
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What ion is in a Base and how would it be described?   OH-, Proton Reciever  
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What ion is in an Acid how would it be described?   H+, Proton Donor  
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What is NH3 and what is it mass?   Ammonia, and 17  
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What is the short hand electron arrangement of Ca   [Ar] 4S2  
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