March 27, 2014

•Types of Chemical Reactions

•Arrows• means “yields” or “produces” or “forms• Above the arrows put conditions necessary for the reaction

•States• Small letter in parentheses showing its state

solid

liquid gas aqueous

D

oC

1.5 atm

MnO2

Pressure

Catalysts

(s)(l)(g)(aq)

Heat

Temperature

Types of Chemical Reactions - Overview

• Synthesis• Synthesis – something is created

• Decomposition• Decompose – something decomposes, breaks apart

• Single Replacement• One part is replaced with something else

• Double Replacement• Two parts are replaced with something else

• Combustion• Something combusts (burning!)

Types of Chemical Reactions• Synthesis• A + X AX

• Example•Water and calcium oxide• H2O + CaO Ca(OH)2

• Copy and paste URL to watch this reaction on YouTubehttp://www.youtube.com/watch?v=Y_FaU__XhPE

Types of Chemical Reactions• Synthesis• A + X AX

• Decomposition• AX A + X

Types of Chemical Reactions

• Decomposition• AX A + X

• Example• Water• 2H2O 2H2 + O2

• YouTube Link:http://www.youtube.com/watch?v=EE58a5fN468

Types of Chemical Reactions• Synthesis• A + X AX

• Decomposition• AX A + X

• Single Replacement• A + BX AX + B• A+ BX BA + X

Types of Chemical Reactions

• Single Replacement• A + BX AX + B• Y + BX BY + X

• Example• Copper and silver nitrate• Cu + 2AgNO3 Cu(NO3)2 + 2Ag

• YouTube Link: http://www.youtube.com/watch?v=dccDiAwztUQ

Types of Chemical Reactions• Synthesis• A + X AX

• Decomposition• AX A + X

• Single Replacement• A + BX AX + B• Y + BX BY + X

• Double Replacement• AX + BY AY + BX

Types of Chemical Reactions

• Double Replacement• AX + BY AY + BX

• Example• Copper (II) chloride and sodium phosphate• 3CuCl2 + 2Na3PO4 Cu3(PO4)2 + 6NaCl

• YouTube Link: http://www.youtube.com/watch?v=3thjr51qIN4 (Not the best video)

Types of Chemical Reactions• Synthesis

• A + X AX

• Decomposition• AX A + X

• Single Replacement• A + BX AX + B• Y + BX BY + X

• Double Replacement• AX + BY AY + BX

• Combustion• Substance combined with oxygen, releasing energy• Combustion of carbon compounds produce CO2 and H2O

Types of Chemical Reactions

• Combustion• Carbon compounds CO2 + H2O

• Example 1: • Isopropyl alcohol• 2 C3H7OH + 9 O2 6 CO2 + 8 H2O

• YouTube link: http://www.youtube.com/watch?v=rA6l-TkGir0