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Types of Reactions You need to be able to identify each type.

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Presentation on theme: "Types of Reactions You need to be able to identify each type."— Presentation transcript:

1 Types of Reactions You need to be able to identify each type.
Synthesis reactions Decomposition reactions Single displacement reactions Double displacement reactions Combustion reactions You need to be able to identify each type.

2 1. Synthesis Example C + O2 O C + O C General: A + B  AB

3 Ex. Synthesis Reaction

4 Practice Predict the products. Na(s) + Cl2(g)  Mg(s) + F2(g) 
Al(s) + F2(g)  2 2 NaCl(s) MgF2(s) 2 3 2 AlF3(s) Now, balance them.

5 2. Decomposition Example: NaCl Cl Na Cl + Na General: AB  A + B

6 Ex. Decomposition Reaction

7 Went from neutral (0) to (+2) Went from (+2) to Neutral (0)
3. Single Displacement Example: Zn + CuCl2 Zn was oxidized Went from neutral (0) to (+2) Zn Cl Cu + Cl Zn Cu + Cu was reduced Went from (+2) to Neutral (0) General: AB + C  AC + B

8 Ex. Single Replacement Reaction

9 Single Replacement Reactions
Write and balance the following single replacement reaction equation: Zn(s) HCl(aq)  ZnCl2 + H2(g) 2 NaCl(s) + F2(g)  NaF(s) + Cl2(g) Al(s)+ Cu(NO3)2(aq) 2 2 2 3 3 Cu(s)+ Al(NO3)3(aq) 2

10 4. Double displacement General: AB + CD  AD + CB Example: MgO + CaS 

11 Double Replacement Reactions
Think about it like “foil”ing in algebra, first and last ions go together + inside ions go together Example: AgNO3(aq) + NaCl(s)  AgCl(s) + NaNO3(aq) Another example: K2SO4(aq) + Ba(NO3)2(aq)  KNO3(aq) + BaSO4(s) 2

12 Practice Predict the products. HCl(aq) + AgNO3(aq) 
CaCl2(aq) + Na3PO4(aq)  Pb(NO3)2(aq) + BaCl2(aq)  FeCl3(aq) + NaOH(aq)  H2SO4(aq) + NaOH(aq)  KOH(aq) + CuSO4(aq) 

13 5. Combustion Reactions Combustion reactions - a hydrocarbon reacts with oxygen gas. This is also called burning!!! In order to burn something you need the 3 things in the “fire triangle”: 1) Fuel (hydrocarbon) 2) Oxygen 3) Something to ignite the reaction (spark)

14 Combustion Reactions In general: CxHy + O2  CO2 + H2O
Products are ALWAYS carbon dioxide and water. (although incomplete burning does cause some by-products like carbon monoxide) Combustion is used to heat homes and run automobiles (octane, as in gasoline, is C8H18)

15 Combustion Example C5H O2  CO2 + H2O Write the products and balance the following combustion reaction: C10H O2  8 5 6

16 Mixed Practice State the type & predict the products. BaCl2 + H2SO4 
C6H12 + O2  Zn + CuSO4  Cs + Br2  FeCO3 


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