5 Types of Reactions

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5 Types of Reactions
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5 Common Reaction Types
-synthesis -decomposition-combustion -single
displacement-double displacement
synthesis - means to make something or build
Example synthetic material, photosynthesis
A B AB
decomposition- means to something down

• starts out as 1 whole and breaks into 2 or more
• EX decomposing (dead) animals or garbage

AB A B
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5 Common Reaction Types
-synthesis -decomposition-combustion -single
displacement-double displacement
Combustion-burning

• always has CO2 as a product

A(fuel) O2 H2O CO2

• actual example

C3H8 5O2 4H2O 3CO2
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5 Common Reaction Types
-synthesis -decomposition-combustion -single
displacement-double displacement
single displacment- 1 switch

• one element switches or hops to another partner

AB C AC B

• Cl switches to pair w/ Ca in the product

2NaCl Ca CaCl2 2Na

• Like a divorce and a remarriage

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5 Common Reaction Types
-synthesis -decomposition-combustion -single
displacement-double displacement
double displacment- 2 switch

• 2 elements switch or change partners

AB XY AY BX

• Na So4 both switches partners in the product

Na2SO4 BeO BeSO4 Na2O
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5 Types of Chemical Reactions
Guess which common reaction type
2 substances
1 product

• synthesis

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5 Types of Chemical Reactions
Examples of synthesis reactions
Synthesis Reaction
A skinny bird (reactant) and the worm (reactant)
combine to make one product..one fat bird.
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5 Types of Chemical Reactions
Examples of synthesis reactions
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2
rain water carbon dioxide in the air
carbon monoxide gas oxygen gas
combine to form
combine to form
carbonic acid
carbon dioxide gas
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5 Types of Chemical Reactions
5 Common Reaction Types
Guess which common reaction type?
reactant -------gt product product

• decomposition

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5 Types of Chemical Reactions
Examples of decomposition reactions
                                  
                                                  
                         
1) water can be broken down into hydrogen
gas oxygen gas
2)To visualize this reaction look at the cartoon
the egg (the reactant), which contained the
turtle at one time, now has opened and the turtle
(product) and egg shell (product) are now two
separate substances.
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5 Types of Chemical Reactions
Examples of decomposition reactions
Decomposition Reaction
Ex mercury oxide decomposes into
mercury and oxygen
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5 Types of Chemical Reactions
Guess which common reaction type?

• Single Displacement

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5 Types of Chemical Reactions
Single Replacement Reaction Contd
The chemical equation for this single replacement
reaction looks like
reactant reactant -----gt product product
Zn 2HCL ZnCl2 H2
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Single Replacement
To visualize this reaction look at the cartoon
the guy in the orange shirt steals the date of
the other guy.
So, a part of one of the reactants trades places
and is in a different place among the products
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5 Types of Chemical Reactions
Guess which common reaction type?
AgNo3 NaCl AgCl NaNo3

• double displacement

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5 Types of Chemical Reactions
4) Double Displacement (Replacement) Reaction

• a reaction in which the elements in two compounds
  are exchanged

• parts of two compounds switch places to form two
  new compounds

• Two reactants yield two products.

AX BY ? AY BX

• they switch partners

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5 Types of Chemical Reactions
Double Displacement (Replacement) Reaction

• The chemical equation for double replacement
  reaction looks like

reactant reactant -----gt product product
EX silver nitrate combines with sodium
two new compounds--silver chloride sodium
nitrate are formed
WHY?
because the sodium and silver switched places
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5 Types of Chemical Reactions
5 Common Reaction Types
Guess which common reaction type?
C7H6O O2 ---gt CO2 H2O

• combustion