Name: ______________________________ date: _____________

 

ch. 7, 8, 18 Balancing chemical equations; chemical reactions test [60 points]

 

Chemistry

 

 

answer sheet: multiple-choice questions.

 

1. ____ 6. ____ 11. ____

 

2. ____ 7. ____ 12. ____

 

3. ____ 8. ____ 13. ____

 

4. ____ 9. ____ 14. ____

 

5. ____ 10. ____ 15. ____

 

 

 

I

II CE*

 

I

 

II CE*

101 ___ ___

T F

___ ___ ___

T F

106 ___ ___

T F

___ ___ ___

T F

102 ___ ___

T F

___ ___ ___

T F

107 ___ ___

T F

___ ___ ___

T F

103 ___ ___

T F

___ ___ ___

T F

108 ___ ___

T F

___ ___ ___

T F

104 ___ ___

T F

___ ___ ___

T F

109 ___ ___

T F

___ ___ ___

T F

105 ___ ___

T F

___ ___ ___

T F

110 ___ ___

T F

___ ___ ___

T F

 

 

 

score: * { ______ - 0.25 * ______ } = _______ ; maximum score = __10__.

[# correct] [# incorrect]

 


Multiple-choice questions.

 

Part A

 

Directions. Each set of lettered choices below refers to the numbered statements or formulas immediately following it. Select the one lettered choice that best fits each statement or formula, and then write your choice on the answer sheet. A choice may be used once, more than once, or not at all in each set.

 

Edit-out

 

Part B

 

Directions: Each question below consists of two statements, statement I in the left-hand column and statement II in the right-hand column. For each question, determine whether statement I is true or false and whether statement II is true or false. Then mark the corresponding T or F blank on your answer sheet. Fill in CE only if statement II is a correct explanation of statement I.

 

Edit-out

 

I

 

II

 

BECAUSE

 

 

BECAUSE

 

 

BECAUSE

 

 

 

 

Part C

 

Directions: Each of the incomplete statements or questions below is followed by five suggested completions or answers. Select the one that is best for each case and write in the corresponding letter in the blank on the answer sheet.

 

Edit-out

 

 


1. Balance the following chemical equations; place "1" as needed. [10 points]

 

a. ___ I2 + ___ Cl2 + ___ H2O --> ___ HIO3 + ___ HCl

 

 

 

b. ___ MnO4 + ___ HCl --> ___ H2O + ___ MnCl2 + ___ Cl2

 

 

 

c. ___ BCl3 + ___ P4 + ___ H2 --> ___ BP + ___ HCl

 

 

 

d. ___ C3H5(NO3)3 --> ___ CO2 + ___ H2O + ___ N2 + ___ O2

 

 

 

e. ___ HCl + ___ Ba(OH)2 --> ___ BaCl2 + ___ H2O

 

 

 

2. Write the complete molecular equation, complete ionic equation, and the net ionic equation; these equations need not be balanced. If a reaction does not occur, then write "no reaction" - for its net ionic equation. Water is the solvent for all reactions. [15 points]

 

a. Pb(NO3)2 (aq) + KCl (aq) -->

 

b. Na2CO3 (s) + NH4Cl (aq) -->

 

 

c. Ag (s) + HCl (aq) -->

 

3. Identify the chemicals that are oxidized and reduced; include the oxidation state near the atom. If it is not a redox reaction, then write "not a redox reaction" [12 points]

 

a. Na + Cl2 --> NaCl

 

 

b. Zn + Cu2+ --> Cu + Zn2+

 

 

c. F2 + NaI --> I2 + NaF

 

 

4. Write the oxidation state of the bold-face / underlined atom [12 points]

 

a. K2Cr2O7 is ___

 

 

b. Hg2Cl2 is ___

 

 

c. CH3OH is ___

 

 

d. CH2O is ___

 

 

5. In the old textbook, what is the table number that contains a list of the name, charge, and symbol of cations and anions ? [1 point]

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