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Title: Types of Reactions Lab
Description: Formal lab detailing synthesis, decomposition, single displacement, and double displacement reactions - outlining the purpose, materials/apparatus, general form of each equation, whether the reactions were endo- or exothermic, and the definition of a catalyst. Notes provided by an International Baccalaureate student.

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Types of Chemical Reactions 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Jonathan Lin 
SNC2DE ­ 03 
Mr
...
 The four basic chemical reactions are as follows: 
 
Type of Reaction 

General Reaction Pattern 

Synthesis 

A + B → AB 

Decomposition 

AB → A + B 

Single Displacement 

A + BC → B + AC 

Double Displacement 

AB + CD → AD + CB 

 
Materials/Apparatus:  
 
Small beaker 
 
 
 

Scoopula  

 
 
Graduated Cylinder 

Safety Goggles  
 

 
 
Hot plate 

Matches 

 
 
Test tube rack 

Copper (II) Chloride 

 
 

Tongs 

Aluminum 

 
 
Bunsen Burner 

Sodium Sulphate 

 
 
Flint lighter 

Barium Chloride 

 
Test tube 

Copper Wire 

 
 
Test tube clamp 

Hydrogen Peroxide 

 

 

Wooden splint 

Manganese Dioxide 

 
 

 
Procedure:  
 
Procedure: ​
Station #1: 
 
 

 
 
 
 
Procedure: ​
Station #2: 
 
 

 
 
Procedure: ​
Station #3: 
 

 
 
Procedure: ​
Station #4: 
 
 

 
 
Discussion Questions:  
 
1
...
 ​anganese dioxide was used at station #4 and acted as a catalyst
...
 At Station #4, the manganese dioxide acted as a catalyst for the decomposition of hydrogen 
peroxide to oxygen and water by lowering the activation energy and thus speeding up the rate of decomposition (see 
Fig
...
 At the same temperature, a catalyst permits more reactant molecules to have enough kinetic energy to react 
compared to an uncatalysed reaction; this allows more collisions to occur and hence speed up the rate of a reaction
...
 The manganese dioxide (MnO​
) catalyst was not chemically altered and could thus be 
2​
effectively reused after being filtered
...
 1 

 
 
3
...
  
 
An endothermic reaction is a chemical reaction that requires the absorption of energy, often in the form of heat, in 
order to proceed
...
 An exothermic reaction is a chemical reaction that releases energy in the 
form of heat or light
...
 The reaction between barium chloride and sodium sulphate at Station #2 was 
unclear; we were unable to determine if an input of energy was required in order for the double displacement 
reaction to occur and in order for a white precipitate to be produced; however, we did not observe any significant 
heat or temperature changes
...
 The decomposition of hydrogen 
peroxide catalyzed by the manganese dioxide at Station #4 was an exothermic reaction because the temperature 
increased and the volume of the substance increased as a result
...
  
 
Conclusion: 
 
Through this experiment, I have tested reactions of each of the four major types of chemical reactions: synthesis, 
decomposition, single displacement, and double displacement
...
 In addition, 
I have classified each reaction as either exothermic or endothermic, and have explained the evidence (i
...
 


Title: Types of Reactions Lab
Description: Formal lab detailing synthesis, decomposition, single displacement, and double displacement reactions - outlining the purpose, materials/apparatus, general form of each equation, whether the reactions were endo- or exothermic, and the definition of a catalyst. Notes provided by an International Baccalaureate student.