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Lesson Sequence Evaluate: Warm – Up Evaluate: Review HW Engage and Elaborate: Whiteboard Molarity Problems Explain: Dilution Elaborate: Dilution Practice problems Evaluate: Exit Ticket
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Molarity and Dilution Calculations
Objective: Today I will be able to:
Calculate the molarity of a solution Calculate dilutions from a stock solution
Evaluation/Assessment: Informal Assessment – monitoring student questions
during the whiteboard practice problems and the dilutions practice
Formal Assessment – analyzing student responses to the exit ticket and dilution problems
Common Core Connection Make sense of problem and persevere in solving them Model with mathematics Look for and express regularity in repeated reasoning
Lesson Sequence Evaluate: Warm – Up Evaluate: Review HW Engage and Elaborate: Whiteboard Molarity
Problems Explain: Dilution Elaborate: Dilution Practice problems Evaluate: Exit Ticket
Warm - Up What is molarity? What is the formula for molarity? What do each of the symbols represent? How are grams converted to moles?
Objective Today I will be able to:
Calculate the molarity of a solution Calculate dilutions from a stock solution
Homework Finish Dilution Practice Problems
Agenda Warm-Up Review HW Molarity Whiteboard Problems Dilutions Notes Dilution Practice Problems Exit Ticket
Review HW
What questions do you have about the homework?
Molarity Whiteboard Problems
Directions Send 1 person up from your row to get each
person a whiteboard, a marker and an eraser Solve the problem Ms. Ose puts up on the
board Hold up your answer for Ms. Ose to check Erase! Repeat
Dilutions Notes
What is dilution? Small amount of solute, large amount of
solvent Less concentrated
Dilution In the laboratory we can make a more
concentrated solution become more dilute
M1V1 = M2V2
Stock solution – initial solution
Dilution Practice Problems
Complete the practice problems at your desk. If you have questions ask Ms. Ose. Problems not finished will become your homework.
Exit Ticket How would you prepare 1.5 L a 2.0 M solution
from a stock solution of 6.0M HCl?