Balancing Chemical Equations Assignment

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?) BaO2 + (?) H2SO4 →(?) H2O2+ (?) BaSO4

1 , 1 , 1 , 1

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?) CaSO4 →(?) O2 +(?) CaS

1 , 2 , 1

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?)Zn + (?)HCl →(?) ZnCl2 +(?) H2

1 , 2 , 1 , 1

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?)Li2O + (?) H2O+ (?) LiOH

1 ,1 ,2

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?) Na2HPO4 + (?) Na4P2O7 + (?) H2O

2 , 1 , 1

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?) H2O+ (?) H2 + (?)O2

2 , 2 , 1

Number the steps for balancing equations: ? Use coefficients to increase the atoms on each side. ? Check to make sure you have the same number of each type of atom on each side. ? Count the atoms on each side. ? Identify the atoms on each side

3 4 2 1

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (?) O2 →(?) O3

3 , 2

Explain why chemical equations have to be balanced.

sample response: Chemical equations must be balanced to ensure that the number of atoms for each element is equal. Any imbalance would be a violation of the law of conservation of mass