Single Replacement Online Lab

Predict the products of single replacement reactions Objective: Today I will be able to: Determine the purpose of the activity series of metals by completing an online lab 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 lab and practice Formal assessment: Analyzing student responses to the lab and practice problems Common Core Connection Use technology and digital media strategically and capably Build Strong Content Knowledge Make sense of problem and persevere in solving them

Lesson Sequence Evaluate: Warm – Up Engage and Explore: Single Replacement Online Lab Explain: Single Replacement Reaction Notes Elaborate: Single Replacement Practice Problems Evaluate: Exit Ticket

Warm - Up Translate, balance and identify the following reaction Potassium phosphate + hydrogen chloride potassium chloride + hydrogen phosphate

Objective Today I will be able to: Determine the purpose of the activity series of metals by completing an online lab 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 Study for Translating and Balancing Quiz Thursday, February 11

Agenda Warm – Up Single Replacement Online Lab Single Replacement Reaction Notes Single Replacement Practice Problems Exit Ticket

Single Replacement Online Lab Complete the lab using the computer. No more that 4 students per group. When you finish, turn in the lab

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