Name: _____________________________________________
Worksheet – Chemical Equations
1. In a chemical equation, the reactants are always on the _______________________. While the products are always
on the ________________________________.
2. Give the symbol used in a chemical equation to represent the following physical states.
a. solid _____
b. liquid ____
c. gas ______
3. Briefly describe the purpose of a catalyst in a chemical reaction.
4. Briefly describe a balanced chemical equation.
5. Balance the following equations.
a. _____ Fe + _____ H2SO4 → _____ Fe2(SO4)3 + _____ H2
b. _____ SnO2 + _____ H2 → _____ Sn + _____ H2O
d. aqueous ____
c. _____ SeCl6 + _____ O2 → _____ SeO2 + _____ Cl2
6. Define a mole and its importance in going from a balanced chemical equation to performing the chemical reaction in
a laboratory.
7. Calculate the molar mass of the following compounds.
a. K2SO4 ______________
b. Ca3(PO4)2 ______________ c. CH3CH2CO2H _______________
8. Do the following conversions.
a. 6.5 moles NaOH = ____________ grams NaOH
b. ___________ moles NaOH = 257 grams NaOH