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This document discusses atoms and molecules through an exercise that has the reader cut a strip of paper in half repeatedly to demonstrate the tiny size of atoms. It notes that after 31 cuts, the size reached is around 0.00013 microns, which is the scale of atoms. It then provides some context on the numbers of atoms that make up everyday objects and the human body. It defines molecules as being made up of connected atoms and looks at examples of molecular structures like water, nitrogen, oxygen, sugar, salt, plastic, proteins and DNA.
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Big tree2
- 1. Ένα ταξίδι στονμικρόκοσμο
- 2. Atoms are verytiny particles that form the building blocks for all matter What are Atoms?
- 3. • A microscopeis used to look at very tiny objects by making them appear larger • It is sort of like a telescope or binoculars What Does a Microscope Do?
- 4. Let’s do alittle exercise!! Just What Size Is an Atom? 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. Cut 1 Just What SizeIs an Atom? 14 cm Hand Pocke t
- 6. Cut 2 Just What SizeIs an Atom? 7.0 cm Finger Ear
- 7. Cut 3 Just What SizeIs an Atom? 3.5 cm Watch Mushroo m Eye
- 8. Cut 4 Just What SizeIs an Atom? 1.75 cm Keyboard Key Ring Insect
- 9. Cut 5 Just What SizeIs an Atom? 0.88 cm Keep going … atoms are much smaller!
- 10. Cut 6 Just What SizeIs an Atom? 0.44 cm Tiny seeds on top of a Whopper bun
- 11. Cut 7 Just What SizeIs an Atom? 0.22 cm Keep going … atoms are still much smaller!
- 12. Cut 8 Just What SizeIs an Atom? 1.0 mm Thread
- 13. Cut 9 Just What SizeIs an Atom? 0.5 mm It’s too difficult to keep cutting! Let’s just pretend from now on
- 14. Cut 10 Just WhatSize Is an Atom? 0.25 mm The size of one tiny light (pixel) on a computer screen
- 15. Cut 11 Just WhatSize Is an Atom? 0.125 mm Wow, I didn’t think anything was this small!
- 16. Cut 12 Just WhatSize Is an Atom? 0.06 mm A piece of hair
- 17. Cut 13 Just WhatSize Is an Atom? 0.03 mm Our meter has disappeared! ???
- 18. Cut 14 Just WhatSize Is an Atom? 0.015 mm The width of paper
- 19. Cut 15 Just WhatSize Is an Atom? 0.007 mm We’re not done yet keep cutting!
- 20. Cut 16 Just WhatSize Is an Atom? 0.003 mm Bacteria
- 21. Cut 17 Just WhatSize Is an Atom? 0.0015 mm We’re not done yet keep cutting!
- 22. Cut 18 Just WhatSize Is an Atom? 1.0 micron Water filter
- 23. Cut 19 Just WhatSize Is an Atom? 0.5 micron We’re not done yet keep cutting!
- 24. Cut 20 Just WhatSize Is an Atom? 0.25 micron Tiny wires inside a computer chip
- 25. Cut 21 Just WhatSize Is an Atom? 0.13 micron We’re not done yet keep cutting!
- 26. Cut 22 Just WhatSize Is an Atom? 0.07 micron Virus
- 27. Cut 23 Just WhatSize Is an Atom? 0.03 micron We’re not done yet keep cutting!
- 28. Cut 24 Just WhatSize Is an Atom? 0.015 micron We’re not done yet keep cutting!
- 29. Cut 25 Just WhatSize Is an Atom? 0.008 micron We’re not done yet keep cutting!
- 30. Cut 26 Just WhatSize Is an Atom? 0.004 micron Almost there 5 Cuts left
- 31. Cut 27 Just WhatSize Is an Atom? 0.002 micron Almost there 4 Cuts left
- 32. Cut 28 Just WhatSize Is an Atom? 0.001 micron Almost there 3 Cuts left
- 33. Cut 29 Just WhatSize Is an Atom? 0.0005 micron Almost there 2 Cuts left
- 34. Cut 30 Just WhatSize Is an Atom? 0.00025 micron Almost there 1 Cut left
- 35. Cut 31 Just WhatSize Is an Atom? 0.00013 micron Atoms !!! C H O N He Na Cl Ca
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- 37. How Many AtomsAre In A Person? that’s … eight million-million- million-million-thousand atoms Wow! Around … 8,000,000,000,000,000,000,000,000,000
- 38. Molecules are verysmall objects that are made up of connected atoms What are Molecules?
- 39. What Do MoleculesLook Like? Molecules can take on all kinds of different shapes and sizes Let’s look at a few!
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- 47. Do Molecules Move? Yes,they sure do! How do they move? It depends on whether they are in a solid, liquid, or gas