Net Ionic Equations, Predicting Products

Objective: ▫Today I will be able to:  Predict the products of reactions for single replacement, double replacement, decomposition, and synthesis reactions  Apply the solubility rules to determining the state of a compound  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 Elaborate: Single and Double Replacement Reaction Practice Explain: Net Ionic Equations, Predicting Products of Synthesis and Decomposition Reactions Elaborate: Predicting Products 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? Name and describe the two types of single replacement reactions.

Objective ▫Today I will be able to:  Predict the products of reactions for single replacement, double replacement, decomposition, and synthesis reactions  Apply the solubility rules to determining the state of a compound  Write the molecular, complete ionic and net ionic equation for a double replacement reaction

Homework Finish Predicting Products Practice

Agenda Warm-Up Single and Double Replacement Reactions Practice Net Ionic Equations Notes Predicting Products of Synthesis and Decomposition Reaction Notes Predicting Products Practice Exit Ticket

Double and Single Replacement Reaction Practice You have 30 minutes to complete the practice. We will review selected answers in class

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: BaCl 2(aq) + Na 2 SO 4(aq)  2 NaCl (aq) + BaSO 4(s) Complete Ionic: Ba +2 (aq) + 2 Cl -1 (aq) + 2 Na +1 (aq) + SO 4 -2 (aq)  2 Na +1 (aq) + 2 Cl -1 (aq) + BaSO 4(s) Net Ionic: Ba +2 (aq) + SO 4 -2 (aq)  BaSO 4(s)

Predicting Products of Synthesis and Decomposition Reactions

Synthesis Reactions Elements or simple compounds are combined to form ONE product Combine elements and criss-cross the charges Examples ▫Cu(II) + S  CuS ▫4 Na + O 2  2 Na 2 O

Decomposition Reactions If TWO elements (binary compound) are present in the original compound, just break it apart into two elements 2 HCl  H 2 + Cl 2

Decomposition Reactions If THREE elements (ternary compound) are present, determine if one of them is a HALOGEN If one element is a halogen, then the halogen and the metal stick together and oxygen gas is produced 2 KClO 3  2 KCl + 3 O 2

Decomposition Reactions If there are no halogens present, then a metallic oxide and a gas with 1 less oxygen than the polyatomic ion is produced CaCO 3  CaO + CO 2

Predicting Products 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 ▫__ Na 2 CO 3  ▫__ Mg + __ N 2 