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!!!