1. Do an Atom Inventory for the Following: CO2 B(NO3)3
Activator
Do an Atom Inventory for the Following:
CO2
B(NO3)3

2. Synthesis
Definition
Two or more elements or compounds combine to make a more complex (larger) compound.
Example
A + B  AB
2Mg + O2  2MgO

3. Decomposition Definition
Compounds (large) break down into two or more substances (smaller).
Examples
AB  A + B
2HgO  2Hg + O2

4. Single Replacement Definition
Occurs when one element replaces another one in a compound.
Examples
AB + C  CB + A
3Pb +2H3PO4  Pb3(PO4)2 + 3H2

5. Double Replacement Definition
Occurs when different atoms in two compounds trade places.
Example
AB + CD  CB + AD
BaCl2 + Na2SO4  2NaCl + BaSO4

6. Balance and Identify the Following Reactions.
__HCl + __NaOH → __H2O + __NaCl
__Cl2 + __KBr  __KCl + __Br2
__Mg + __O2 → __MgO
Double Replacement 2 2
Single Replacement 2 2
Synthesis

7. Balance and Identify the Following Reactions.
__MgCO3 → __MgO + __CO2
__ Sb + __ O2  __ Sb4O6
__ S8 + __ O2  __ SO3
Decomposition 3 4
Synthesis 12 8
Synthesis

8. Balance and Identify the Following Reactions.
__C4H8 + __ O2 → __ CO2 + __ H2O
__ KNO3 → __ KNO2 + __ O2
__ AgNO3 + __ NaCl → __ NaNO3 + __ AgCl 6 4 4
Single Replacement 2 2
Decomposition
Double Replacement

9. Activator – 11/6/2014
How can you tell the difference between synthesis and decomposition?
How can you tell the difference between single replacement and double replacement?

10. Watch the movie and then complete the chart.
Type of Reaction
Definition
 Equation
Synthesis
Decomposition
Single Replacement
Double Replacement
Two or more elements or compounds combine to make a more complex substance
A + B → AB
AB → A + B
Compounds break down
into simpler substances
Occurs when one element replaces another one in a compound
AB + C → AC + B
Occurs when different atoms in two different compounds trade places
AB + CD → AC + BD
A = Red B = Blue C = Green D = Yellow

11. Identifying Chemical Reactions
2. Use colored pencils to circle the common atoms or compounds in each equation to help you determine the type of reaction it illustrates. Use the code below to classify each reaction.
S = Synthesis D = Decomposition SR = Single Replacement DR = Double Replacement
____ P O2 → P4O10 ____ Mg O2 → MgO
____ HgO → Hg O2 ____ Al2O3 → Al O2
____ Cl NaBr → NaCl Br2 ____ H N2 → NH3

12. ____ Na + Br2 → NaBr ____ CuCl2 + H2S → CuS + HCl
____ HgO Cl2 → HgCl O2 ____ C H2 → CH4
____ KClO3  →   KCl  +  O2  ____ S F2 → SF6
____ BaCl2   +   Na2 SO4 →     NaCl   +   BaSO4

13. What is wrong with . . .
H2 + O2  NaOH
2H2 + O2  2H2O

14. ____ Na + ____ Cl2  ____ NaCl
#1 Balance and Identify
____ Na + ____ Cl2  ____ NaCl

15. #2 Balance and Identify
____ H2O  ____ H2 + ____ O2

16. ____ CaCO3  ____ CaO + ____ CO2
#3 Balance and Identify
____ CaCO3  ____ CaO + ____ CO2

17. #4 Balance and Identify
___ Cu + ___ AgNO3  ___ Ag + ___ Cu(NO3)2

18. ___ K + ___ H2O  ___ H2 + ___ KOH
#5 Balance and Identify
___ K + ___ H2O  ___ H2 + ___ KOH

19. ___ Pb(NO3)2 + ___ KI  ___ PbI2 + ___ KNO3
#6 Balance and Identify
___ Pb(NO3)2 + ___ KI  ___ PbI2 + ___ KNO3

20. #7 Balance and Identify
___ CaCO3 + ___HCl  ___CaCl2 + ___ H2CO3

21. ___ HCl + ___ NaOH → ___ H2O + ___ NaCl
#8 Balance and Identify
___ HCl + ___ NaOH → ___ H2O + ___ NaCl

22. #9 Balance and Identify
___ Mg + ___ O2 → ___ MgO 

23. ___ MgCO3 → ___ MgO + ___ CO2
#10 Balance and Identify
___ MgCO3 → ___ MgO + ___ CO2

24. #11 Balance and Identify
___ KNO3 → ___ KNO2 + ___ O2

25. #12 Balance and Identify
___AgNO3 + ___NaCl → ___NaNO3 + ___AgCl

26. #13 Balance and Identify
___ Ag + ___ S → ___ Ag2S

27. ___ Cl2 + ___ KBr → ___ KCl + ___ Br2
#14 Balance and Identify
___ Cl2 + ___ KBr → ___ KCl + ___ Br2

28. #15 Balance and Identify
___ H2 + ___ O2  ___ H2O