Ch. 4, 7, 8, & 18 chemical names, equation, & reactions test [55 points]

1. fill-in the table [10 points]

2. Balance the following chemical equation using the lowest ratio of integers. Add “1” as appropriate. [17 points]

a. ____ Mg₃N₂ + _____ H₂O  --> _____ Mg(OH)₂ + _____ NH₃

b. _____ Zn(NO₃)₂ + _____ Cu --> _____ CuNO₃ + Zn

c. _____ C₆H₆ + _____ O₂ --> _____ CO₂ + _____ H₂O

d. _____ CH₃NH₂ + ____ O₂ --> _____ CO₂ + _____ H₂O + _____ N₂

3. What is the oxidation number of [4 points]

a. N in NO₃ ^- is _____

b. C in C₂H₆ is _____

4. Write the molecular equation, complete ionic equation, and net ionic equation involving the following reactants in water. If there is no reaction, then write “no reaction”. [12 points]

a. Na₂CO_{3 (aq)} + HNO_{3 (aq)} -->

b. lithium sulfate reacts with barium nitrate

5. Identify which atom is oxidized / reduced and write its oxidation number near it. [12 points]

a. CH₄ + O₂ -->  CO₂ + H₂O

b. H₂ + I₂ -->  HI