Module Five Sample Exam

Module Five-Part E Basic Stoichiometry Definitions 4 points

Write the definitions to the following words:

 

 

mole

 

 

 

reactants

 

 

 

products

 

 

 

catalyst

 

 

 

precipitate

 

 

Fill in the following with the symbols used in chemical equations which has the stated translation or meaning(s):

 

_________1. Produces, yields

 

_________ or _________ 2. Solid substance or precipitate forms

 

 

_________ or _________3. Gaseous substance formed

 

 

_________4. Water or aqueous solution

 

 

Show the symbol for heat:__________

 

 

How would you show a catalyst in a chemical reaction where A plus B forms products D and E,

but is catalyzed by substance C:

 

 


 

 

Module Five-Part F Balancing Chemical Equations 5 points

Balance the following chemical equations (write the chemical formulas in #10 then balance):

 

 

1. Fe + FeCl3 FeCl2

 

 

 

2. Al + O2 Al2O3

 

 

 

3. Na2CO3 + C + N2 NaCN + CO

 

 

 

4. FeS + O2 Fe2O3 + SO2

 

 

 

5. IBr + NH3 NI3 + NH4Br

 

 

 

6. Cl2 + HOH HCl + HClO

 

 

 

7. AgNO3 AgNO2 + O2

 

 

 

8. HClO4 + P4O10 H3PO4 + Cl2O7

 

 

 

9. HCl + Mg(OH)2 MgCl2 + HOH

 

 

 

10. Sodium hydroxide + Hydrochloric acid sodium chloride + water