Title: Instructional Objective:
1- Instructional Objective
- 1.Learn different types of reaction
2Five Types of chemical reactions
- Synthesis reaction
- Decomposition reaction
- Single replacement (Single displacement)
- Double replacement (Double displacement)
- Combustion reaction
3To visualize a synthesis reaction look at the
following cartoon
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In the cartoon, the skinny bird (reactant) and
the worm (reactant) combine to make one product,
a fat bird.
4Synthesis reaction
- Also known as composition reaction
- Always going to be one product
- Basic form A Â Â X Â ? Â Â AX
- EX. MgO(s) Â Â H2O(l) Â ? Â Â Mg(OH)2(s)
- EX. 2P(s) Â Â 3Cl2(g) Â ? Â Â 2PCl3(g)
5To visualize a decomposition reaction look at the
following cartoon
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                           In this 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.
6Decomposition reaction
- A single compound breaks down into simpler
compounds. - Always going to be one reactant.
- Basic form AX Â ? Â A Â Â X
- EX. 2H2O(l) Â ? Â Â 2H2(g) Â Â O2(g)
- EX. 2NaCl(l) Â ? Â Â 2Na(s) Â Â Cl2(g)
7Notice, 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.
8Single replacement
- Always going to an element and a compound.
- Basic form A Â Â BX Â ? Â Â AX Â Â B
- Â EX. Fe(s) Â Â CuSO4(aq) Â ? Â Â FeSO4(aq) Â
 Cu(s) (Metal replace the metal) -  AX   Y  ?   AY X
- EX. Cl2(g) Â Â 2NaBr(aq) Â ? Â Â 2NaCl(aq) Â
 Br2(l) (nonmetal replaces the nonmetal only)
9To visualize a double replacement reaction look
at the following cartoon
10Double replacement reaction
- occurrs between ions in aqueous solution .
- occurrs between two compounds.
- Always produce a precipitate (solid) ,a gas or
- water
- Basic form AX Â Â BY Â ? Â Â AY Â Â BX
- EX. NaCl (aq) Â Â AgNO3(aq) Â ? Â Â NaNO3(aq) Â
 AgCl(s) - EX. HCl(aq)   FeS(s)  ?   FeCl2(aq)   H2S(g)
- EX. HCl(aq) Â Â NaOH(aq) Â ? Â Â NaCl(aq) Â
 H2O(l) -
11- Wood as well as many common items that combust
are organic (i.e., they are made up of carbon,
hydrogen and oxygen). When organic molecules
combust the reaction products are carbon dioxide
and water (as well as heat).
12Combustion reaction
- hydrocarbon is react with oxygen.
- Always produce carbondioxide and water .
- Always produce heat, light or sound
- EX. CH4(g) Â Â 2O2(g) Â ? Â Â CO2(g) Â Â 2H2O(g)
- EX. 2C4H10(g) Â Â 13O2(g) Â ? Â Â 8CO2(g) Â
 10H2O(g)