Page 274 - Science Course 3 (Book 1)

Mo7-L5a: What are the Types of Chemical Reactions?

Combustion is a chemical reaction in which a SUMMARY
substance combines with oxygen and releases
energy. What are the Types of Chemical Reactions?
Chemical Reaction
Chemical reactions are classified according
to patterns seen in their reactants and
products.

Combustion Reaction
substance + O substance(s)
2
C H 8 + 5O 2 3CO 2 + 4H O In a synthesis reaction, there are two or more
2
3
propane oxygen carbon water reactants and one product. A decomposition
reaction is the opposite of a synthesis
dioxide
reaction.
2C H + 13O 8CO + 10H O
2
2
10
4
2
A B A B
A B A B
Key Concept
What are the Types of Chemical Reactions? In replacement reactions, an element, or
elements, in a compound is replaced with
What are the different types of chemical reaction? another element or elements.

A B C A C B

A B C D A C B D

266