Name……………………………….
Hour…………
Chemistry
Chapter 11.1-Describing and balancing chemical reactions
Homework
Directions: Match each item with the correct statement below.
1.
2.
3.
4.
5.
6.
7.
8.
a. +
b. →
e. (aq)
f.
Δ
c. (s)
g.
Pt
d. (l)
h. (g)
______ Indicates a use of a catalyst in a reaction.
______ Designates a reactant or product in the liquid state
______ Used to separate two reactants or two products
______ Designates a reactant or product in the solid state
______ Indicates that heat is supplied to the reaction
______ Designates a reactant or product in the gaseous state
______ Indicates that a reactant or product is dissolved in water
______ “Yields,” separates reactants from products
Directions: For each question, read the statement and select the best response. Write the letter of your
answer on the line preceding the question.
9. ______ A ___ is a representation of a chemical reaction; the formula(s) of the reactant(s) are
connected by an arrow to the formula(s) of the product(s).
a. catalyst
b. coefficient
c. chemical equation
d. mole
10. ______ The statement, “methane reacts with molecular oxygen to produce carbon dioxide and water”
is an example of a ___.
a. skeletal equation
b. balanced equation
c. word equation
d. coefficient
11. ______ In the balanced chemical equation below, the product(s) is/are ___. Select all that apply!
BaCO3(s) Δ CO2(g) + BaO(s)
a. barium carbonate
b. carbon dioxide
c. barium oxide
Chapter 11.1 – Describing chemical reactions
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12. ______ In the balanced chemical equation below, the reactant(s) is/are ___. Select all that apply!
2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)
a. carbon dioxide
b. water
c. dicarbon hexahydride
d. oxygen
13. ______ A chemical equation that indicates the relative amounts of reactants and products is called a
___.
a. coefficient
b. skeleton equation
c. balanced equation
d. catalyst
14. ______ Balanced chemical equations are based on the Law of Conservation of Mass. That is, the
number of atoms on the reactant side is __ the number of atoms on the product side.
a. greater than
b. less than
c. equal to
15. ______ A ___ reaction is a chemical change in which two or more substances react to form a single
new substance.
a. double replacement
b. single replacement
c. combination
d. decomposition
e. combustion
16. ______ A ___ reaction is a chemical change in which a single compound breaks down into two or
more simpler products.
a. double replacement
b. single replacement
c. combination
d. decomposition
e. combustion
17. ______ A ___ reaction is a chemical change in which a single element or halogen replaces a second
element in a compound.
a. double replacement
b. single replacement
c. combination
d. decomposition
e. combustion
Chapter 11.1 – Describing chemical reactions
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18. ______ A ___ reaction is a chemical change in which the positive ions between two compound are
exchanged.
a. double replacement
b. single replacement
c. combination
d. decomposition
e. combustion
19. ______ A ___ reaction is a chemical change in which an element or compound reacts with oxygen,
producing energy and often carbon dioxide.
a. double replacement
b. single replacement
c. combination
d. decomposition
e. combustion
Directions: Match each item with the correct statement below.
a. AB → A + B
d. AB + CD → AD + CB
b. A + B → AB
e. A + O2 → AOn + energy
c. A + BC → B + AC
20. ______ General format for a combustion reaction
21. ______ General format for a double replacement reaction
22. ______ General format for a combination reaction
23. ______ General format for a single replacement reaction
24. ______ General format for a decomposition reaction
Directions: Balance the following reactions and identify the reaction type. Place your balancing coefficient
in the lines provided to you.
25. ______ Mg(s) + ______O2(g) → ______ MgO(s)
Reaction type:_____________________________________________
26. ______ HgO(s) → ______ Hg(l) + ______ O2(g)
Reaction type:_____________________________________________
27. ______ Ca(OH)2(aq) + ______ HCl(aq) → ______ CaCl2(aq) + ______ H2O(l)
Reaction type:_____________________________________________
28. ______ K(s) + ______ H2O(l) → ______ KOH(aq) + ______ H2(g)
Reaction type:_____________________________________________
Chapter 11.1 – Describing chemical reactions
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29. ______ Mg(s) + ______ N2(g) → ______ Mg3N2(s)
Reaction type:_____________________________________________
30. ______ CH4(g) + ______ O2(g) → ______ CO2(g) + ______ H2O(g)
Reaction type:_____________________________________________
31. ______ Na2S(aq) + ______ Cd(NO3)2(aq) → ______ CdS(s) + ______ NaNO3(aq)
Reaction type:_____________________________________________
32. ______ Al(s) + ______Cl2(g) → ______AlCl3(s)
Reaction type:_____________________________________________
33. ______ Fe(s) + ______ Pb(NO3)2(aq) → ______ Pb(s) + ______ Fe(NO3)2(aq)
Reaction type:_____________________________________________
34. ______Cl2(aq) + ______ NaI(aq) → ______ NaCl(aq) + ______ I2(aq)
Reaction type:_____________________________________________
35. ______ S(s) + ______ O2(g) → ______ SO3(g)
Reaction type:_____________________________________________
36. ______ Al(NO3)3(aq) + ______ (NH4)2Cr2O7(aq) → ______ Al2(Cr2O7)3(s) + ______ NH4NO3(aq)
Reaction type:_____________________________________________
37. ______ Zn(s) + ______ Cu(NO3)2(aq) → ______ Cu(s) + ______ Zn(NO3)2(aq)
Reaction type:_____________________________________________
38. ______ C6H12O6(s) + ______ O2(g) → ______ CO2(g) + ______ H2O(g)
Reaction type:_____________________________________________
39. ______ Al(OH)3(s) → ______ Al2O3(s) + ______ H2O(l)
Reaction type:_____________________________________________
40. ______ C2H6O(l) + ______ O2(g) → ______ CO2(g) + ______ H2O(g)
Reaction type:_____________________________________________
41. ______ Ba(NO3)2(aq) + ______ Na2CO3(aq) → ______ BaCO3(s) + ______ NaNO3(aq)
Reaction type:_____________________________________________
Chapter 11.1 – Describing chemical reactions
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