How much is a…

1. How much is a… Words can be a handy way to talk about numbers, especially if… • Pair • Trilogy • Gross • Score • Dozen • Octet • Quartet • Baker’s Dozen • Grand • 2 • 3 • 144 • 20 • 12 • 8 • 4 • 13 • 1000

2. They're Really Huge!

3. Atoms are really small • So, whenever there are enough of them that you can see it, that’s a LOT of atoms! • Nobody would want to count them • Chemists talk about groups of atoms called moles

4. Did you say MOLE? I’m pretty sure she did…

5. A mole in Chemistry is just an amount (like dozen)- so chemists can talk about groups of atoms • It’s 6.02 x 1023

6. Why 6.02 x 1023, you ask? • That’s the # amu it takes to make 1g • Sometimes it’s called Avogadro’s number, named after this handsome chap

7. 6.02 x 1023 is awfully big… • If I gave all of the citizens of the US (about 300 million) 1 mole of dollar bills and everyone spent 100 dollars a second • It would still take 636,000 years for it to be spent! • If you had a mole of pennies and gave away $1 million a day, it would take you more than 3000 years to give away all of your money!

8. 6.02 x 1023 is awfully big… • The mass of that many animal moles would weigh • More than 1.3 times the mass of the moon • More than 60 times the combined mass of the earth’s oceans

9. 6.02 x 1023 is awfully big… • If you lined up that many animal moles, they would stretch • From earth to alpha centauri • 2 million times!

10. 6.02 x 1023 is awfully big… • Avogadro’s number of popcorn kernels would cover the earth with a depth of over 9 miles • Pop cans would cover it 200 miles deep • A mole of basketballs would make a new planet the size of earth

11. 6.02 x 1023 is awfully big… • If you count 1 number a second, it would take you 11.5 days to count to 1 million • If everyone on the planet collectively counted to 6.02x1023, it would take 2,845,590 years!

12. Mole Pictures! • Draw a picture which includes • Mole • Avogadro • 6.02 x 1023 • Get creative and colorful!