Synthesis Reactions

1
Synthesis Reactions

• 2 H2 O2 ? 2 H2O
• Two or more reactants combine to form one new
  product.

2
Synthesis Reactions

• Example
• Sodium metal and Chlorine Gas combine to yield
  Sodium Chloride

Na
Cl2
NaCl
2
2
Click here for a synthesis reaction video.
3
Decomposition Reactions

• 2 H2O2 ? 2 H2O O2
• One reactant breaks apart and becomes two or more
  products.

Click here for a decomposition reaction demo.
4
Decomposition Reactions

• Example
• Aluminum Oxide decomposes to yield Aluminum Metal
  and Oxygen Gas

Al2O3
O2
Al
2
3
2
4
5
Combustion Reactions

• CH4 2 O2 ? CO2 2 H2O
• A hydrocarbon is usually burned with Oxygen gas
  to produce Carbon Dioxide Water.

6
Combustion Reactions

• Hint for balancing

C4H10 O2 ? CO2 H2O
4
5
6.5
2
8
10
13
Double the reaction!!!
7
Single Displacement Rxns

• Or Single Replacement
• Li NaCl ? LiCl Na
• The single element replaces an element in the
  compound to form a new compound.

Click here for a single displacement demo.
8
Single Displacement Rxns

• Metal replaces metal
• Cu 2 AgNO3 ? Cu(NO3)2 2 Ag
• Or nonmetal replaces nonmetal
• Example
• F2 CaCl2 ? CaF2 Cl2

9
Double Displacement Rxns

• Or Double Replacement
• NaCl KBr ? NaBr KCl
• Two compounds are the reactants and the metals
  switch with one another.

10
Double Displacement Rxns

• Watch out for Hydrogen, sometimes it acts as a
  metal!
• NaOH HCl ? NaCl H2O

11
Double Displacement Rxns

• When in lab, these reactions can produce
  precipitates, which are solid particles mixed in
  a liquid.

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ortfolio/text_images/FG19_P757-1a.JPG
12
Double Displacement Rxns
Click here for a precipitation demo.
Click here to go to the Live Chem virtual
reactions webpage.
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ortfolio/text_images/FG19_P757-1a.JPG