More Lessons for IGCSE Chemistry
A series of free IGCSE Chemistry Activities and Experiments (Cambridge IGCSE Chemistry).
Types of Chemical Reactions
The five major types of chemical reactions are:
synthesis, decomposition, combustion, single replacement (also called single displacement) and double replacement (also called double displacement). We'll look at examples of each, so that you can classify them, figuring out what type they are.
In a synthesis reaction, a compound is made from more simple materials.
In a decomposition reaction, a compound breaks down into simpler elements or compounds.
In a combustion reaction, a compound (usually with carbon, hydrogen, and sometimes oxygen) combines with oxygen to give carbon dioxide and water.
In a single replacement (displacement) reaction, a more reactive element that is on its own displaces another less reactive element in an aqueous solution. The less reactive element is removed from the compound and replaced by the more reactive element.
In a double replacement (displacement) reaction, the positive and negative ions in two ionic compounds switch places. A precipitate may be formed.
Examples of synthesis, decomposition, combustion, single displacement and double displacement
Demonstration of Types of Chemical Reactions in the Lab
1. Draw the table given in the video and complete it.
2. Write the balanced equation for each reaction.
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