Linking Covalent Molecules to Percent Mass Calculations

Monday and Tuesday:
Goal: Students convert between grams, particles, moles and volumes of gases at STP.
Quick Review
1.) Coach and Model solving problems using the mole road map.
2.) Students practice making calculations using the mole road map.
3.) Pyramid when everyone is done.
4.) Chapter 10 vocabulary quiz next period.
Assessment: Problem Solving Handout.

Wednesday and Monday:
Goal: Students complete a grid to practice converting between grams, particles, moles and volumes of gases at STP.
Quick Review: Mole Calculations
1.) Students use last class periods wksht and mole map to complete a grid that shows moles, particles, mass, and volumes. Maybe save until after Thanksgiving.
Goal: Review Shapes of Covalent Bonds, make percent mass calculations using covalent molecule models.
2.) Review shapes of covalent molecules using VSEPR
3.) Complete Lab using Gum Drops as Models of different covalent molecules.
Assessment: Molecules Created, and handout completed

Tuesday and Wednesday:
Goal: Students determine the percentage by mass of elements in ionic and covalent compounds.
Quick Review: Naming
1.) Mole Review Calculation Grid
2.) Mole Quiz-Finish VSEPR Lab
3.) Do football to frisbee ratio comparison demonstration: In number the ratio is one to one, However, in mass the ratio is quite different. How do you calculate percentages? For example if a football weighs 600 grams and a frisbee weighs 300 grams, how do you find the % that the frisbee makes up and the % that the football makes up? Is it 50% to 50%? Why? Why not?
4.) Show how to find the percent using the frisbee and the football. part/whole*100.
5.) Now students use their sheets over covalent bonds to find the percentage of each chemical in each compound, model the first problem.
Assessment: Hand two of those problems in on a half sheet of paper.

Thursday and Friday:
Goal: Review Chapter 10, make mole and percent mass calculations.
Quick Conversion Quiz
1.) Complete review problems over chapter 10.
2.) Go over test Concepts (Mole Calculations, Mass Percentages, VSEPR Shapes)
3.) Pyramid Review

Monday and Tuesday:
Chapter Ten Test with Covalent Molecule Structures
1.) Test over Chapter Ten
2.) Project Start: Favorite Processed Food, start looking up structures, names, formulas, melting point, boiling point, and molar masses for each ingredient.