Name: _____________________________
Per:______
Date:__________
WS 8-3: Classifying Chemical Reactions
Directions: Label the following reactions as synthesis (S), decomposition (D), single replacement (SR), double
replacement (DR) and combustion (C).
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
NaCl → Na + Cl2
___________
Na + Cl2 → NaCl
___________
C2H4 + O2 → CO2 + H2O
___________
H2O → H2 + O2
___________
H2 + O2 → H2O
___________
C8H18 + O2 → CO2 + H2O
___________
NaOH + HCl → HOH + NaCl
___________
Na + HCl → H2 +
NaCl
___________
K + Cl2 → KCl
___________
K + AgCl → Ag + KCl
___________
C6H12 + O2 → CO2 + H2O
___________
Ca + S → CaS
___________
KOH + HNO3 → HOH + KNO3
___________
Al + O2 → Al2O3
___________
HgO → Hg + O2
___________
NaOH + H2SO4 → Na2SO4 + H2O
___________
Fe + O2 → Fe2O3
___________
C6H8 + O2 → CO2 + H2O
___________
20.
H2 + N2 → NH3
___________
21.
C3H5(NO3)3 → CO2 + N2 + H2O + O2
Pb(NO3)2 + K2CrO4 →PbCrO4 + KNO3
38.
___________
22.
23.
24.
25.
26.
___________
Fe + CuCl2 → FeCl2 + Cu
___________
KClO3 → KCl + O2
___________
Mg + HCl → H2 + MgCl2
___________
C5H10 + O2 → CO2 + H2O
___________
CO2 → C + O2
___________
+ AgNO3 → NaNO3 + AgCl
27.
NaCl
28.
___________
S + Cl2 → SCl2
___________
29.
BaCl2 + NaOH → NaCl + Ba(OH)2
30.
31.
32.
33.
34.
35.
36.
37.
___________
Zn + CuSO4 → ZnSO4 + Cu
___________
CH4 → C + H2
___________
Pb(NO3)2 + Mg → Pb + Mg(NO3)2
___________
H2SO4 → H2 + S + O2
___________
C3H8 + O2 → CO2 + H2O
___________
O2 + N2 → N2O4
___________
CaBr2 + Na3P → Ca3P2 + NaBr
___________
2KI + Br2 → 2KBr + I2
___________
C6H12O6 → C + H2O
__________
Right the balanced chemical formula for the following reactions, and identify what type of reaction it is
1. Write the balanced equation for the following reaction: ammonia, NH3, reacts with hydrochloric acid
(HCl) to form ammonium chloride. What type of reaction is this?
Balanced Equation:
Type:__________
2. When heated, calcium carbonate decomposes to form calcium oxide and carbon dioxide. Write the
balanced equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
3. Write the balanced equation for the following reaction: barium oxide reacts with water to form barium
hydroxide. What type of reaction is this?
Balanced Equation:
Type:__________
4. Acetaldehyde (C2H4O) decomposes to form methane, CH4, and carbon monoxide (CO). Write the
balanced equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
5. Write the balanced equation for the following reaction: zinc reacts with copper (II) nitrate to form zinc
nitrate and copper. What type of reaction is this?
Balanced Equation:
Type:__________
6. When heated, calcium sulfite decomposes to form calcium oxide and sulfur dioxide. Write a balanced
equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
7. Write the balanced equation for the following reaction: iron metal reacts with sulfuric acid (H2SO4) to
form iron (II) sulfate and hydrogen gas (H2). What type of reaction is this?
Balanced Equation:
Type:__________
8. Azomethane, C2H6N2, decomposes to form ethane, C2H6, and nitrogen gas (N2) at 297 °C. Write an
balanced equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
9. Write out the balanced equation for the following reaction: carbon monoxide (CO) reacts with chlorine
gas (Cl2) to form phosgene, COCl2. What type of reaction is this?
Balanced Equation:
Type:__________
10. Manganese (II) iodide decomposes when exposed to light to form manganese and iodine. Write an
balanced equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
11. Write a balanced chemical equation for the reaction in which dinitrogen pentoxide reacts (N2O5) with
water to form nitric acid (HNO3). What type of reaction is this?
Balanced Equation:
Type:__________
12. Magnesium reacts with titanium (IV) chloride to produce magnesium chloride and titanium. Write the
balanced equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
13. Write a balanced chemical equation for the reaction in which carbon reacts with zinc oxide to produce
zinc and carbon dioxide (CO2). What type of reaction is this?
Balanced Equation:
Type:__________
14. Bromine reacts with sodium iodide to form sodium bromide and iodine. Write the balanced equation
for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
15. Write a balanced chemical equation for the reaction in which phosphorus trichloride (PCl3) reacts with
chlorine gas (Cl2) to produce phosphorus pentachloride (PCl5). What type of reaction is this?
Balanced Equation:
Type:__________
16. Phosphorus reacts with bromine to produce phosphorus tribromide (PBr3). Write the balanced
equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
18. Write the balanced chemical equation for the reaction in which sulfuric acid (H2SO4)reacts with
potassium hydroxide to produce potassium sulfate and water. What type of reaction is this?
Balanced Equation:
Type:__________
19. Write a balanced chemical equation for the reaction in which propane, C3H8, reacts with oxygen gas
(O2) to produce carbon dioxide (CO2) and water. What type of reaction is this?
Balanced Equation:
Type:__________
20. Benzene, C6H6, reacts with oxygen gas (O2) to produce carbon dioxide (CO2) and water. Write the
balanced equation for this reaction. What type of reaction is this?
Balanced Equation:
Type:__________
Decide whether each reaction is possible. Place a check next to the reactions that are possible.
1. _____ Zn + CuSO4  ZnSO4 + Cu
2. _____ Pb + Mg(NO3)2  Pb(NO3)2 + Mg
3. _____ AgCl2 + Zn  ZnCl2 + Ag
4. _____ 2HCl + Ca  CaCl2 + H2
5. _____ Pt + 2HCl  PtCl2 + H2
6. _____ Magnesium metal reacts with hydrochloric acid to produce magnesium chloride and hydrogen
gas.
7. _____ Sodium Chloride reacts with potassium to produce potassium chloride and sodium.
8. _____ Zinc Sulfate reacts with copper to produce zinc metal and copper (II) sulfate.
9. _____ Cobalt (II) oxide reacts with aluminum to produce aluminum oxide and cobalt.
10. _____ Nickel (III) sulfate reacts with zinc to produce zinc sulfate and nickel