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Tuesday, May 13 th : “A” Day Wednesday, May 14 th : “B” Day Agenda

Tuesday, May 13 th : “A” Day Wednesday, May 14 th : “B” Day Agenda. Chapter 7 Review Review Chapter 7 Jeopardy Review Next time: Concept Review due Chapter 7 Test. Chapter 7 Review. 2. What term is used to describe the mass in grams of 1 mol of a substance? Molar Mass.

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Tuesday, May 13 th : “A” Day Wednesday, May 14 th : “B” Day Agenda

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  1. Tuesday, May 13th: “A” DayWednesday, May 14th: “B” DayAgenda • Chapter 7 Review Review • Chapter 7 Jeopardy Review Next time: • Concept Review due • Chapter 7 Test

  2. Chapter 7 Review 2. What term is used to describe the mass in grams of 1 mol of a substance? Molar Mass

  3. Chapter 7 Review • How many atoms of gold are there in a pure gold ring with a mass of 10.6 g? • 10.6 g Au X 1 mole Au = .0538 moles Au • 196.97 g Au • .0538 moles Au X 6.022 X 1023 atoms Au • 1 mole Au • 3.24 x 1022 atoms Au

  4. Chapter 7 Review • Find the molar mass of the following compounds: • Potassium dichromate • K1+ Cr2O7 2- • K2Cr2O7 • K: 2(39.10) = 78.20 • + Cr: 2(52.00) = 104.00 • O: 7(16.00) = 112.0 • 294.20 g/mol

  5. Chapter 7 Review • Find the molar mass of the following compounds: • Magnesium nitrate • Mg2+ NO31- • Mg(NO3)2 • Mg: 24.31 = 24.31 • + N: 2(14.01) = 28.02 • O: 6(16.00) = 96.00 • 148.33 g/mol

  6. Chapter 7 Review • An oxide of phosphorus is 56.34% phosphorus, and the rest is oxygen. Calculate the empirical formula for this compound. • 56.34 g P X 1 mol P = 1.819 mol P = 1 mol P (2) • 30.97 g P 1.819 2 mol P • 43.66 g O X 1 mol O = 2.729 mol O = 1.5 mol O (2) • 16.00 g O 1.819 3 mol O • P2O3

  7. Chapter 7 Review • The empirical formula of the anticancer drug altretamine is C3H6N2. The experimental molar mass is 210 g/mol. What is the molecular formula? • C: 3(12.01) = 36.03 210 = 3 • + H: 6(1.01) = 6.06 70.11 • N: 2(14.01) = 28.02 • 70.11 g/mol • 3(C3H6N2) = C9H18N6

  8. Jeopardy Teams2A • Team #1: Megan, Chris, Emily, Taylor, Jordan • Team #2: Connor, Colleen, Ben, Desiree, Rachael • Team #3: Paityn, Zendra, Jake, Ashley, Tabitha • Team #4: Austin, Drew, Krits, Lauren, Allie • Team #5: Stephanie, Jackie, Lydia, Brooke, Mya

  9. Jeopardy Teams4A • Team #1: Troy, Cody, Anna, Daleah • Team #2: Jordan, Rebecca, Abby • Team #3: Josh, Ashley, Sarah • Team #4: Morgan, Eric, Brook • Team #5: Tate, Mason, Korey

  10. Jeopardy Teams1B • Team #1: Autumn, Ashley, Kyle, Morgon • Team #2: Christian, Allie, Hunter, Kelsey • Team #3: Alyssa, Andy, Rachel M., Krysta • Team #4: Phoenix, Emily, Mason, Whitney • Team #5: Rachel D., Sydney, Michael

  11. Jeopardy Teams3B Team #1: Kellie, RJ, Tom, Allysa Team #2: Merik, Danika, Michelle, Holly Team #3: Kenzie, Justin, Adam, Kaitlyn Team #4: Hunter, Molly, Eryn, Noah Team #5: Shelby, Dylan, Alexandra

  12. Chapter 7 “The Mole & Chemical Composition”

  13. THE RULES: • There will be 5 teams • Mrs. Elfline’s decisions are final – that means no whining! • Each member of the winning team will receive $1 mole money

  14. And now…here is the host of Jeopardy… Mrs. Elfline

  15. Let’s Get Ready to play… Today’s Categories are:

  16. Definitions

  17. This ‘n That

  18. Calculations

  19. Calculations

  20. Rebus Puzzles

  21. Definitions This ‘n That Calculations Calculations Rebus Puzzles $100 $100 $100 $100 $100 FJ $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500

  22. The number of atoms in 1 mole of any pure substance Answer…

  23. Avogadro’s NumberOR6.022 X 1023 100

  24. The unit for molar mass Answer…

  25. g/moleORgrams per mole 200

  26. What 2 things does a chemical formula tell you? Answer…

  27. 1. What elements are in a compound2. How many atoms of each element are in a compound 300

  28. A formula that shows the simplest whole-number ratio of the atoms in a compound Answer…

  29. Empirical Formula 400

  30. What are isotopes? Answer…

  31. Atoms of the same element that have different number of neutrons. 500

  32. Which has more atoms: 1 mole of gold or 1 mole of silver? Answer…

  33. They both have the same number of atoms, 6.022 X 1023 100

  34. How many hydrogen atoms are there in 1 molecule of ammonium carbonate, (NH4)2CO3? Answer…

  35. 8 200

  36. To find the molecular formula from the empirical formula, you need to calculate… Answer…

  37. The Molar Mass of the Empirical Formula 300

  38. As the atomic masses of the elements in the periodic table decreases, the number of atoms in one mole of the element… Answer…

  39. Stays the same1 mole = 6.022 X 1023 atoms of ANY element 400

  40. If a compound has a molecular formula of X2Y4, what is it’s empirical formula? Answer…

  41. XY2 500

  42. How many atoms are present in 2.5 moles of aluminum, Al? Answer…

  43. 1.5 X 1024 atoms Al 100

  44. How many moles of gold are present in 150 grams of Au? Answer…

  45. .76 moles Au 200

  46. A compounds empirical formula is BH3. If the experimental molar mass is 27.67 g/mole, what is the molecular formula? Answer…

  47. B2H6 300

  48. What is the percentage composition of HCl? Answer…

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