Unit 2 Review Sheet - and charge of each sub-atomic...

Name: __________________________________________ Date: ____________
WKST #7: Unit 2 Review Sheet (20 points) Period: __________
1. Complete the chart below:
Symbol Protons Neutrons Electrons
Sr-89
47
Ti
4+
N
3+
Si
4-
Pt-195
119
Sn
2+
2. Balance the reactions using the smallest whole number coefficients. Classify each reaction.
a. ___ Fe
2
(SO
4
)
3
+ ___ KOH  ___ K
2
SO
4
+ ___ Fe(OH)
3
________
b. ___ KClO
3
 ___ KClO
4
+ ___ KCl ________
c. ___ N
2
O
5
+ ___ H
2
O  ___ HNO
3
________
d. ___ Al + ___ FeO  ___ Al
2
O
3
+ ___ Fe ________
3. Draw a model of the atom, labeling the protons, neutrons, electrons and nucleus. Include the mass