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Stoichiometry and S'mores Lab Activity

This chemistry lesson introduces stoichiometry and includes a fun S'mores lab activity. Students will practice calculating reactant and product quantities and then enjoy making and eating S'mores.

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Stoichiometry and S'mores Lab Activity

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  1. Chemistry – April 15, 2019 Get out Stoichiometry WS For Hmk check • P3 Challenge – • Consider the combustion reaction of 2 C3H8O + 9 O2 6 CO2 + 8 H2O. • How many grams of CO2 will be formed from the combustion of C3H8O with 15.0 L of oxygen at STP? • Today’s Objective – • S’mores Lab Activity • Agenda • Homework Review • S’mores Activity • Assignment: • Complete S’mores Activity (due Tuesday) • Finish p3 of Stoichiometry WS

  2. Homework Ans Only • 1. a) b) c) d) e) • 2. 18.00 mol O2 9. 7.46 g HCl; 65.0 mol HCl • 3. 4.77 g KCl ; 2.10 g KCl 10. 35.1 PbS; 121 L H2S • 4. 155 g NaOH ; 124 g Na2O 11. 1.47 x 103g CaCl2 • 5. 27.9 g Fe; 43.9 g FeS 12. 17.5 kg Fe • 6. 576.0 g O2; 97.4 g NaCl 13. 127.9 g O2 • 7. 1.75 mol Cu; 26.4 g Cu • 8. 20.7 g Fe; 0.537 mol Al; 0.269 mol Fe2O3; 12.8 g Al2O3

  3. S’mores Activity, work in pairs • You will be given a Kit that contains • Yellow cards for Graham Crackers • Styrofoam balls for Marshmallows • Gold beads for Chocolate pieces • You get to Cook and Eat after completing the activity with your kit. • Real S’mores Recipe: 2 Graham Crackers, 1 Marshmallow and 1/4 of a Hershey bar (3 small pieces). Construct and Microwave for 5 seconds.

  4. Exit Slip - Homework • Exit Slip: Clean up and return your S’mores Kit intact with the items you inventoried. • What’s Due? (Pending assignments to complete.) • S’mores activity due Wednesday • What’s Next? (How to prepare for the next day) • Read p100-102, p224-232, 241 p246-247

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