Chapter 5 : Chemical reactions Section 1 : Reactions and Equations
Balance the following chemical equations.
1. 1. _2__ Cu2O + _1__ C
2. 2. _2__ H2O2
_4__ Cu + _1__ CO2
_ _2_H2O + __1_O2
3. 3. _2__ Al + _1__Fe3N2
4. 4. __8_Ag2S
2__ AlN + _3__ Fe
__16_Ag + __1_ S8
5. 5. ___3_ ZnS + __2_AlP
_1__Zn3P2 + _1__Al2S3
6. 6. __2_ Fe(OH)3
_1__ Fe2O3 + __3_H2O
7. Given the two chemical equations, circle the one that is
balanced.
7. a. 2Na + Cl2
b. 2Na + 2Cl2
8. 8. a. C3H8 + 5O2
b. 2C3H8 + 5O2
2NaCl
2NaCl
3CO2 + 4H2O
3CO2 + 8H2O