Transcript Final Exam Review - Geneva High School

Final Exam Review 3
Copy down and answer the following questions. You
may use your book or notebook if necessary.
1. What is the oxidation number of an atom?
2. Write balanced chemical formulas for the
following:
–
–
–
–
–
Ca+2 + Cl-1
K+1 + O-2
Mg+2 + S-2
Al+3 + Br-1
Ca+2 + N-3
Answers:
1. The oxidation number of an atom is the
number of electrons an atom will lose, gain,
or share in order to become stable.
2.
• CaCl2
• K2O
• MgS
• AlBr3
• Ca3N2