Predicting Products: Synthesis and Decomposition Reactions

Evaluation/Assessment: Objective: Today I will be able to: Predict the products of reactions for single replacement, double replacement, decomposition, and synthesis reactions Write the molecular, complete ionic and net ionic equation for a double replacement reaction Evaluation/Assessment: Informal assessment: listening to group interactions as students complete the practice sheets Formal Assessment: Analyze Student Responses as they complete the practice worksheets Common Core Connection Build Strong Content Knowledge Make sense of problem and persevere in solving them Use appropriate tools strategically Look for and express regularity in repeated reasoning

Lesson Sequence Evaluate: Warm – Up Explain: Predicting Products of Synthesis and Decomposition Reactions Elaborate: Mixed Predicting Products Practice Explain: Net Ionic Equations Elaborate: Net Ionic Equations Practice Evaluate: Exit Ticket

Warm - Up What is the purpose of the activity series of metals? What determines whether or not a single replacement reaction will take place?

Objective Today I will be able to: Predict the products of reactions for single replacement, double replacement, decomposition, and synthesis reactions Write the molecular, complete ionic and net ionic equation for a double replacement reaction

Homework Finish Predicting Products Practice

Agenda Warm-Up Predicting Products Practice Net Ionic Equation Net Ionic Equation Practice Exit Ticket

Predicting Products Practice Complete the practice at your desk. We will review the answers as a class

Mixed Practice Problems PbSO4 + Ca    Li2S  Mg + N2  NaBr + Pb(NO3)2  C2H4 + O2 

Mixed Practice Cont. K2SO4  NH4Cl + Ba(OH)2  SnCO3  Sn + FeSO4    Ag + O2 

Mixed Practice Cont CdI2 + Br2    C5H12 + O2 

Writing Net Ionic Equations

Net Ionic Equations In a double replacement reaction, not all ions are involved in the reaction “spectator ions” We write net ionic equations to determine what actually reacted

Net Ionic Equations Example Barium Chloride + Sodium Sulfate  Molecular: BaCl2(aq) + Na2SO4(aq)  2 NaCl(aq) + BaSO4(s) Complete Ionic: Ba+2(aq) + 2 Cl-1(aq) + 2 Na+1(aq) + SO4-2(aq)  2 Na+1(aq) + 2 Cl-1(aq) + BaSO4(s) Net Ionic: Ba+2(aq) + SO4-2(aq)  BaSO4(s)

Net Ionic Equations Practice Complete the practice at your desk. Whatever you do not finish will become your HW.

Exit Ticket Predict the products of the reactions and balance the equations __ Na2CO3  __ Mg + __ N2  What is the purpose of writing a net ionic equation?