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A Journey to the Microscopic World Professor Errington Department of Chemical Engineering University at Buffalo

A Journey to the Microscopic World Professor Errington Department of Chemical Engineering University at Buffalo. What are Atoms?. Atoms are very tiny particles that form the building blocks for all matter. What Does a Microscope Do?.

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A Journey to the Microscopic World Professor Errington Department of Chemical Engineering University at Buffalo

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  1. A Journey to the Microscopic WorldProfessor ErringtonDepartment of Chemical EngineeringUniversity at Buffalo

  2. What are Atoms? Atoms are very tiny particles that form the building blocks for all matter

  3. What Does a Microscope Do? • A microscope is used to look at very tiny objects by making them appear larger • It is sort of like a telescope or binoculars

  4. Just What Size Is an Atom? Let’s do a little exercise!! • What you’ll need • A strip of paper • A pair of scissors • What to do • Take your strip of paper and cut it into equal halves • Cut one of the remaining pieces of paper into equal halves • Repeat!

  5. Just What Size Is an Atom? Cut 1 Pocket Hand 14 cm

  6. Just What Size Is an Atom? Cut 2 Finger Ear 7.0 cm

  7. Just What Size Is an Atom? Cut 3 Watch Mushroom Eye 3.5 cm

  8. Just What Size Is an Atom? Cut 4 Ring Insect KeyboardKey 1.75 cm

  9. Just What Size Is an Atom? Cut 5 Keep going … atoms are much smaller! 0.88 cm

  10. Just What Size Is an Atom? Cut 6 Tiny seeds on top of a Whopper bun 0.44 cm

  11. Just What Size Is an Atom? Cut 7 Keep going … atoms are still much smaller! 0.22 cm

  12. Just What Size Is an Atom? Cut 8 Thread 1.0 mm

  13. Just What Size Is an Atom? Cut 9 It’s too difficult to keep cutting! Let’s just pretend from now on 0.5 mm

  14. Just What Size Is an Atom? Cut 10 The size of one tiny light (pixel) on a computer screen 0.25 mm

  15. Just What Size Is an Atom? Cut 11 Wow, I didn’t think anything was this small! 0.125 mm

  16. Just What Size Is an Atom? Cut 12 A piece of hair 0.06 mm

  17. Just What Size Is an Atom? Cut 13 Our meter has disappeared! ??? 0.03 mm

  18. Just What Size Is an Atom? Cut 14 The width of paper 0.015 mm

  19. Just What Size Is an Atom? Cut 15 We’re not done yetkeep cutting! 0.007 mm

  20. Just What Size Is an Atom? Cut 16 Bacteria 0.003 mm

  21. Just What Size Is an Atom? Cut 17 We’re not done yetkeep cutting! 0.0015 mm

  22. Just What Size Is an Atom? Cut 18 Water filter 1.0 micron

  23. Just What Size Is an Atom? Cut 19 We’re not done yetkeep cutting! 0.5 micron

  24. Just What Size Is an Atom? Cut 20 Tiny wires inside a computer chip 0.25 micron

  25. Just What Size Is an Atom? Cut 21 We’re not done yetkeep cutting! 0.13 micron

  26. Just What Size Is an Atom? Cut 22 Virus 0.07 micron

  27. Just What Size Is an Atom? Cut 23 We’re not done yetkeep cutting! 0.03 micron

  28. Just What Size Is an Atom? Cut 24 We’re not done yetkeep cutting! 0.015 micron

  29. Just What Size Is an Atom? Cut 25 We’re not done yetkeep cutting! 0.008 micron

  30. Just What Size Is an Atom? Cut 26 Almost there 5 Cuts left 0.004 micron

  31. Just What Size Is an Atom? Cut 27 Almost there 4 Cuts left 0.002 micron

  32. Just What Size Is an Atom? Cut 28 Almost there 3 Cuts left 0.001 micron

  33. Just What Size Is an Atom? Cut 29 Almost there 2 Cuts left 0.0005 micron

  34. Just What Size Is an Atom? Cut 30 Almost there 1 Cut left 0.00025 micron

  35. Just What Size Is an Atom? Cut 31 H Ca He Atoms !!! Cl C Na O N 0.00013 micron

  36. Periodic Table

  37. How Many Atoms Are In A Person? Around … 8,000,000,000,000,000,000,000,000,000 that’s … eight million-million-million-million-thousand atoms Wow!

  38. What are Molecules? Molecules are very small objects that are made up of connected atoms

  39. What Do Molecules Look Like? Molecules can take on all kinds of different shapes and sizes Let’s look at a few!

  40. Water H H H2O O

  41. N N O O Air Nitrogen Oxygen

  42. Sugar

  43. Salt

  44. Plastic

  45. Protein

  46. DNA

  47. Do Molecules Move? Yes, they sure do! How do they move? It depends on whether they are in a solid, liquid, or gas

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