Estudiante

Exam
Name___________________________________


MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1)

Which set of numbers willcorrectly balance the given equation?




1)

_______

A)

2, 1, 1, 4

B)

1, 2, 2, 2

C)

3, 2, 3, 2

D)

1, 4, 1, 2

E)

1, 1, 1, 2



2)

Which of thefollowing three statements about balanced chemical equations is/are false?
I. The total mass of all reactants must equal the total mass of all products.
II. The total number of atoms of reactants mustequal the total number of atoms of products.
III. The total number of moles of reactants must equal the total number of moles of products.

2)

_______

A)

Statement I is false.

B)Statement II is false.

C)

Statement III is false.

D)

I and II are both false.

E)

II and III are both false.



3)

Balance the following equation, and list thecoefficients (including 1's) in the same order.




3)

_______

A)

1, 2, 6, 4

B)

1, 2, 4, 4

C)

1, 2, 3, 2

D)

1, 1, 3, 2

E)

2, 4, 12, 8



4)Which of the following prototype equations corresponds to a double replacement type reaction?

4)

_______

A)

AB + CD →_ AC + BD

B)

AA + BB →_ BB + AA

C)

A + BC →_AC + B

D)

A + BC →_ ABC

E)

AB + CD →_ AD + CB



5)

What type of reaction is represented by the following equation?




5)

_______

A)

doublereplacement

B)

combination

C)

combustion

D)

decomposition

E)

single replacement



6)

Many gas grills and trailers use propane, , as a fuel. Write andbalance the equation for the combustion of propane.

6)

_______

A)



B)



C)



D)



E)





7)

What type of reaction is represented by the following...