Post on 27-Mar-2015
Balancing Equations MORE Practice - Answers
1. __ CF4 + __ Br2 -->__ CBr4 + __ F2
List metals, non-metals, then H and O.
1. __ CF4 + __ Br2 ---->__ CBr4 + __ F2
C
FF
BrBr
1 1
4 2
2
4
2 4
2
4
2. ___FeO3 + ___ H2O ---> __Fe(OH)3
List metals, non-metals, then H and O.
2. ___Fe2O3 + ___ H2O ---> __Fe(OH)3
Fe
H
O
2 1
2
3
2
2
66
6 6
3. ___ZnCl2 + __H2 ---> ___ Zn + ___ HCl
List metals, non-metals, then H and O.
3. ___ZnCl2 + __H2 ---> ___ Zn + ___ HCl
Zn
Cl
H
1 1
2 1
2
2
2 2
4. ____ C2H2 + ___H2 ---> ___ C2H6
List metals, non-metals, then H and O.
4. ____ C2H2 + ___H2 ---> ___ C2H6
C
H
2 2
4 6
2
6
5. ____ P4 + ___ O2 ---> ___ P2O3
List metals, non-metals, then H and O.
5. ____ P4 + ___ O2 ---> ___ P2O3
P
O
4 2
2
4
2 6
3
6
6. ____ZnCl2 + ____ H2 ---> _____ Zn + _____ HCl
List metals, non-metals, then H and O.
6. ____ZnCl2 + ____ H2 ---> _____ Zn + _____ HCl
Zn
Cl
H
1 1
2 1
2
2
2 2
7. ____ C + ___ H2 ---> ___ C3H8
List metals, non-metals, then H and O.
7. ____ C + ___ H2 ---> ___ C3H8
C
H
1 3
3
3
2 8
4
8
8. ___HNO3 + __Mg(OH)2 --->___H2O + __Mg(NO3)2
List metals, non-metals, then H and O.
8. ___HNO3 + __Mg(OH)2 --->___H2O + __Mg(NO3)2
Mg
N
H
O
1 1
1 2
2
2
4 2
2
4
8 8
9. ____ Al + ___ Br2 ---> ___ Al2Br6
List metals, non-metals, then H and O.
9. ____Al + ___Br2 ---> ___Al2Br6
Al
Br
1 2
2
2
2 6
3
6
10. ____ Fe + ___ O2 ---> ___ Fe2O
List metals, non-metals, then H and O.
10. ____ Fe + ___ O2 ---> ___ Fe2O
Fe
O
1 2
2
2
2 1
2
2
4
4
4
How did you do?
• 0 wrong = 100% A+• 1 wrong = 90% A• 2 wrong = 80% B• 3 wrong = 70% C• 4 or more = keep practicing!!!