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Mole-o-rama Chapter 3.4. Objectives Why did you have to have 602 beans in your mole? Weighing to count What is a mole?

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Presentation on theme: "Mole-o-rama Chapter 3.4. Objectives Why did you have to have 602 beans in your mole? Weighing to count What is a mole?"— Presentation transcript:

1 Mole-o-rama Chapter 3.4

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3 Objectives Why did you have to have 602 beans in your mole? Weighing to count What is a mole?

4 Count Option 1: Count 602 beans Option 2: Say you counted Option 3: Mass a bean » Multiply by 602 » Collect that mass of beans!

5 Even better… Beans are different… Use average value Mass 10 beans … Divide by 10 = average

6 More beans… 6.0 g 8.0 g 5.0 g 4.0 g 5.0 g ABCDEABCDE Average bean here is 5.6 g 602 bean B = 4800 grams 602 bean D = 2400 grams 602 average = 3400 grams

7 Use averages!! Periodic TableIsotope Isotope Average Atomic Mass: Average mass of all atoms of an element Found on periodic tables everywhere

8 http://www.chem.wisc.edu/areas/reich/handouts/periodic-table.GIF

9 http://img.photobucket.com/albums/v623/johnnysilver/etc/chineseperiodictable.gif

10 What is the average? 35 Cl 36 37 Cl

11 What is the average? 35 Cl 35.6 37 Cl 35 Cl

12 What is the average? 35 Cl 35.5 37 Cl 35 Cl

13 Use averages!! Periodic TableIsotope Isotope 35.45 is the average atomic mass of Cl

14 Back to the beans… If we had a dozen beans… what would they weigh? 12 beans 5.6 g 1 bean = 67 grams

15 Back to the beans… If we had a dozen bean burritos*… what would they weigh? 12 burritos 440 g 1 burrito = 5280 grams http://www.bajafresh.com/burritos.php *Bean burrito is not pictured due to boring-ness … this is the Baja Fresh Baja Burrito…

16 Molé Tasty sauce for burritos, etc. http://www.lasanitas.com/ourmenu/images/apic7big.jpg

17 Mole http://www.cohenufo.org/Images.GIF/Mole.jpg

18 Mole Aside from being a small rodent and fun project… http://snigglezone.com/images/mole1.jpg http://mrskingsbioweb.com/moleday.JPG

19 Avogadro’s Number … the Mole! The Mole is a counting number Chemist’s Dozen 6.02 x 10 23 things

20 If we had a mole of beans… It would have the mass of 3 billion billion CVN 76’s

21 By the way Enough aircraft carriers (which are about 3 ½ football fields long) to reach the sun and back almost 4 BILLION times

22 Why do we need the mole? This paperclip is 1.18 g 23 of them have 1 mole of Al atoms 6.02 x 10 23 atoms

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27 Next time… The name is Mole. James Mole. http://k9zw.files.wordpress.com/2007/10/moles_are_forever.jpg

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