Types of Reactions

1. Exothermic reaction 6. Double Replacement2. Endothermic reaction 7. Combustion3. Synthesis4. Decomposition5. Single replacement

By: Caitlin Shroyer

CitationsEndothermic Reaction: Info: http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm Picture: http://jchemed.chem.wisc.edu/jcesoft/cca/CCA3/MAIN/ENDO2/PAGE1.HTM

Exothermic Reaction:Info: http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm , Picture: http://en.wikipedia.org/Exothermic_reaction

Synthesis:Info: http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm Picture: http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA3/STILLS/NACL/NACL1/64JPG48/20.JPG

Decomposition:Info: http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm Picture: http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx#toc17

Double Replacement:Info: http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm Picture: http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx#toc23

Single Replacement:Info: http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm Picture: http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

Combustion:Info: http://www.marymount.k12.ny.us/marynet/stwbwk05/05flashchem/lyreaction/lyreaction.html Picture: http://wildeboer-fitch.wikispaces.com/Media-+Chemical+Rx

Exothermic Reaction

• Release energy in the form of heat, light ,or sound• May occur spontaneously and result in higher randomness of entropy of the system• May produce heat or may even be explosive

Fe2O3 + 2Al -> 2Fe + Al2O3 + Heat

Endothermic Reaction

• They must absorb energy in order to proceed• Can not occur spontaneously • They absorb energy as the temperature drop ismeasured during the reaction.

Ba(OH)2.8H2O (s) + 2 NH4SCN (s) --> Ba(SCN)2 (s) + 10 H2O (l) + 2 NH3 (g)

Synthesis

• Two or more simple substances combine to form a more complex substance• As two or more reactance yielding one product is another way to identify a synthesis reaction

2Na + Cl2 --> 2NaCl

Decomposition

• This reaction has a more complex substance that breaks down into more simpler parts• Synthesis and decomposition are opposite reaction

2 NaHCO3 --> NaCO3 + H2O + CO2

Single Replacement

• Single uncombined element • Two reactants yeild to or more products

Zn + 2HCl --> ZnCl2 + H2

Double Replacement

• Two compounds switch places to form a new compound.• Two reactants yield two products

BaCl2 + Na2SO4 --> BaSO4 + 2NaCl

Combustion

• A chemicals that involve oxygen and produces energy( heat) so rapidly that flames are shown.• Is a reaction that includes oxygen dioxide and water.

2Mg + O2 --> 2MgO