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 à FeCl₂

2. Al + O₂ à Al₂O₃

3. Na₂CO₃ + C + N₂ à NaCN + CO

4. FeS + O₂ à Fe₂O₃ + SO₂

5. IBr + NH₃ à NI₃ + NH₄Br

6. Cl₂ + HOH à HCl + HClO

7. AgNO₃ à AgNO₂ + O₂

8. HClO₄ + P₄O₁₀ à H₃PO₄ + Cl₂O₇

9. HCl + Mg(OH)₂ à MgCl₂ + HOH

10. Sodium hydroxide + Hydrochloric acid à sodium chloride + water