Net Ionic Equations

Evaluation/Assessment: Objective: Today I will be able to: 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 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 Evaluate: Review HW Explain: Net Ionic Equations Elaborate: Net Ionic Equations Practice Evaluate: Exit Ticket

Warm - Up Predict the products of the following reactions: Al + N2  Al2(CO3)3 

Objective Today I will be able to: Write the molecular, complete ionic and net ionic equation for a double replacement reaction

Homework Study for quiz Friday the 18th!

Agenda Warm-Up Net Ionic Equations Review Review Net Ionic Equations HW Exit Ticket

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 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)

What questions do you have about last nights homework? Review HW What questions do you have about last nights homework?

Exit Ticket What is the purpose of writing a net ionic equation?