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Monday, May 16 th : “A” Day Tuesday, May 17 th : “B” Day Agenda. Chapter 7 Review – go over Chapter 7 Jeopardy Review Homework: Chapter 7 Crossword Puzzle Next time: Crossword puzzle due Chapter 7 Test. Jeopardy Teams 2B. Team #1: Brandon, Colin, Andrew, Taylor, Brock
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Monday, May 16th: “A” DayTuesday, May 17th: “B” DayAgenda • Chapter 7 Review – go over • Chapter 7 Jeopardy Review • Homework: • Chapter 7 Crossword Puzzle Next time: • Crossword puzzle due • Chapter 7 Test
Jeopardy Teams2B • Team #1: Brandon, Colin, Andrew, Taylor, Brock • Team #2: Lexi, Kate, Bill, Meghan, Hallah • Team #3: Alisha, Hannah, Casey, Rowdy, Sean • Team #4: Stephanie, Calvin, Avery, Janae, Aaron • Team #5: Tabitha, Mark, Alyssa, Erin
Chapter 7 “The Mole & Chemical Composition”
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
And now…here is the host of Jeopardy… Mrs. Elfline (Chem teacher of awesomeness)
Let’s Get Ready to play… Today’s Categories are:
Definitions This ‘n That Calculations Calculations Talk To Me $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
The unit for molar mass Answer…
1. What elements are in a compound2. How many atoms of each element are in a compound 300
A formula that shows the simplest whole-number ratio of the atoms in a compound Answer…
What are isotopes? Answer…
Atoms of the same element that have different number of neutrons. 500
Which has more atoms: 1 mole of gold or 1 mole of silver? Answer…
How many hydrogen atoms are present in 1 mole of ammonium hydrogen phosphate, (NH4)2HPO4? Answer…
9 200
To find the molecular formula from the empirical formula, you need to calculate… Answer…
As the atomic masses of the elements in the periodic table decreases, the number of atoms in one mole of the element… Answer…
Stays the same1 mole = 6.022 X 10 23 atoms of ANY element 400
If a compound has a molecular formula of X2Y6, what is it’s empirical formula? Answer…
XY3 500
How many atoms are present in 2.5 moles of aluminum, Al? Answer…
How many moles of gold are present in 150.0 grams of Au? Answer…
.76 moles Au 200
A compounds empirical formula is BH3. If the molar mass is 27.67 g/mole, what is the molecular formula? Answer…
B2H6 300
Calculate the molar mass of calcium nitrate, Ca(NO3)2. Answer…
164.1 g/mole 500
79.87 g/mole 100
What is the mass (in grams) of 5.6 moles of sodium, Na? Answer…
128.8 grams Na 200
Calculate the average atomic mass of rubidium if 72.17% of its atoms have a mass of 84.91 amu and 27.83% of its atoms have a mass of 86.91 amu. Answer…
85.47 amu 300