Saturday, 23 February 2013

03 Types of Chemical Reactions

01) Types of Chemical Changes/Reactions 

a) Combustion  
b) Combination 
c) Decomposition 
d) Precipitation Reaction 
e) Acids & Bases Reaction (will be covered later) 
f) Photosynthesis 
g) Respiration 


Watch the videos below and answer the questions for each reaction in this link (click here) as a group. Each group will be assigned a reaction later on to present to class. You may recall your laboratory experiences to help you answer the questions. 

Additional Slides are provided here

a) Combustion 
Example 1: Burning sodium in oxygen



Example 2: Burning methane in oxygen



                                       


b) Combination 
Example: Sodium reacting with chlorine gas to form sodium chloride (tablet salt)



c) Decomposition - i) Thermal Decomposition 
Example: Thermal Decomposition of Copper (II) Carbonate



c) Decomposition - ii) Electrolytic Decomposition 
Example: Electrolysis of water


d) Precipitation Reaction 
Example: Formation of lead (II) iodide precipitate



e) Respiration 
- How to determine amount of carbon dioxide evolved?














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