Single Replacement Practice

Objective: Today I will be able to: Predict the products of single replacement reactions Use the activity series of metals and the periodic table to determine if a single replacement reaction will occur Evaluation/Assessment: Informal assessment: Listening to student interactions as they complete the practice Formal assessment: Analyzing student responses to the practice problems Common Core Connection Build Strong Content Knowledge Use appropriate tools strategically Make sense of problem and persevere in solving them

Lesson Sequence Evaluate: Warm – Up Explain: Single Replacement Reaction Notes Elaborate: Single Replacement Reaction Practice Evaluate: Exit Ticket

Warm - Up Predict the products and balance the reaction: Barium + Silver Chloride  Sodium Chloride + Fluorine 

Objective Today I will be able to: Predict the products of single replacement reactions Use the activity series of metals and the periodic table to determine if a single replacement reaction will occur

Homework Finish Practice Problems

Agenda Warm – Up Single Replacement Reaction Notes Single Replacement Reaction Practice Exit Ticket

Single Replacement Reaction Notes Predicting Products

Review: What is a single replacement reaction? A free element reacts with a compound to form a new compound and to release one of the elements of the original compound General Equation: AB + C  AC + B Examples 2 HCl + Mg  MgCl2 + H2 2 KI + Cl2  2 KCl + I2

Two types of single replacement reactions Metallic Free Non – Metallic Free Free element is a metal Most common Example Mg + 2HCl  MgCl2 + H2 Free element is a non-metal Example KI + Cl2  KCl + I2

Free elements will not always switch places… so how can we determine when a single replacement reaction will occur?

If the single replacement reaction is metallic free: Use the activity series of metals Anything higher on the list as a free element will replace anything lower on the list from a compound

Examples: Na + PbCl2  2 Na + PbCl2  2 NaCl + Pb This reaction occurs because sodium is higher on the activity series than lead Al + NaCl  Al + NaCl  No Reaction This reaction does not occur because aluminum is NOT higher on the activity series than sodium

If the single replacement reaction is non-metallic free: Use the periodic table Any free element higher in a family on the Periodic Table can replace any lower element from a compound. Why does this work?

Examples Cl2 + NaI  Cl2 + 2 NaI  2 NaCl + I2 This reaction occurs because chlorine is higher in its family than iodine S + H2O  S + H2O  No Reaction This reaction does not occur because sulfur is lower in its family than oxygen

Single Replacement Reaction Practice Complete the practice at your desk. We will continue to work on the practice problems in class tomorrow.

Exit Ticket Explain why the reaction between has no reaction NaF + Br2  No Reaction