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5 Types of Chemical Reactions

5 Types of Chemical Reactions. 2-15-11 Matching Cards Graphic Organizer Worksheet. 5 types of chemical equations. Why do we categorize? To break large groups down into smaller groups to make them easier to understand To make differences and similarities more clear. Type 1: SYNTHESIS.

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5 Types of Chemical Reactions

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  1. 5 Types of Chemical Reactions 2-15-11 Matching Cards Graphic Organizer Worksheet

  2. 5 types of chemical equations • Why do we categorize? • To break large groups down into smaller groups to make them easier to understand • To make differences and similarities more clear

  3. Type 1: SYNTHESIS • Definition: Two or more reactants combine to form one product • Key sign: One product • General Structure: A + B  C • Examples: • #4: CO + O2 CO3 • #2: SO2 + O2  SO4

  4. Type 2: DECOMPOSITION • Definition: One reactant breaks down into two or more products • Key sign: One reactant • General Structure: A  B + C • Examples: • #5: H2CO3 CO2 + H2O • #10: NCl3  N2 + Cl2

  5. Type 3: SINGLE REPLACEMENT • Definition: A single element replaces another element in a compound • Key sign: One single element and a compound on both sides of the equation • General Structure: AB + C  AC + B • Examples: • #13: H2SO4 + Ca  CaSO4 + H2 • #14: Li + H2O  LiOH + H2

  6. Type 4: DOUBLE REPLACEMENT • Definition: Two ions replace each other to form two different compounds • Key sign: Two compounds on both sides of the equation • General Structure: AB + CD  AD + CB • Examples: • #3: CaCl2 + K3PO4  Ca3(PO4)2 + KCl • #17: Al(SO4)3 + Ca(OH)2  Al(OH)3 + CaSO4

  7. Type 5: COMBUSTION • Definition: A chemical burns in oxygen to product light/heat • Key sign: Oxygen is a reactant, carbon dioxide and water are products (or vice versa) • General Structure: A + O2 CO2 + H2O • Examples: • #16: C10H22 + O2 CO2 + H2O • #19: CH4 + O2  CO2 + H2O

  8. Categories (15 min) • Organize the 19 chemical equations into the FIVE types with your partners • # of products • # of reactants • Elements vs. compounds • Similar reactants and products • On one separate sheet of paper with all of your group members names on it, write down the equations in your five groups

  9. Classifying Reactions Copy down the following reactions on a SEPARATE sheet of paper and then classify the type of reaction and explain your answer. • C3H8 + O2 CO2 + H2O • FeCl3 + NaOH  Fe(OH)3 + NaCl • Ag2O  Ag + O2 • K + MgBr2  KBr + Mg • H2 + O2 H2O • NaCl + F2  NaF + Cl2

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