Chapter #7 A History of the Atom prepared by Huriye Grsel Key Points Definition of alchemy Why is alchemy not science?
Alchemy / chemistry Atom vs. element Orbitals Timeline of the atom ALCHEMY
Science ~ adventure developed by human beings to understand the universe. Started by gathering useful information which made life easier... Natural
characteristics of human beings: curiosity + making research + thinking ability led to ALCHEMY The Alchemist Frankly, Id be satisfied if I could turn gold into lead! The Alchemists Dream
COPPER SILVER GOLD Zinc coated Brass = Copper + Zinc Penny into Gold - Alchemist Dream Alchemy vs. Chemistry
Alike Different Different Understand the physical world better Trial & Error Method Topic
Alchemy Topic immortality Chemistry Scientific Method Alchemists Alchemists were the forerunners of modern chemists! The history of alchemy is a history of men who were, on one hand,
scientists, and on the other hand, dreamers. There is no way to separate the practical chemistry of the alchemists from their occasional fanciful excursions into the unknown. The early craftsmen who were able to mix a little bit of this with a drop or two of that and come up with startling new materials began to think of what they had done. Wouldnt it be possible, they may have said to themselves, to change common metals into gold or silver? And, if they could find a magic elixir, might they be able to prolong life? These men were protected by the princes, kings, and popes of their day. Men of power, it would seem, always need more wealth. And more health. Alchemists
Alchemy was a medieval, metallurgical, superstition-laden, chemical science with touches of sorcery, religion, and experimentation. But the alchemists laid down the groundwork for modern science. The situation was complex. And in the ranks of the alchemists were crooks, quacks, and frauds. But there were many honest scientists, too. This is their story the story of how some men tried to turn magic into science. I think youve crossed that thin line between transmuting and cooking. Paracelsus Man consisted of three elements
SALT represented the body SULFUR the soul MERCURY the spirit He thought he could rearrange the amounts of the elements to change man. He desired immortality and searched for a mystical elixir of life. The Beginnings early practical chemistry: household goods, weapons,
soap, wine, basic medicine The Greeks believed there were 4 elements: D ___ earth D D
___ air fire water ~ Timeline Greeks (Democratus ~450 BC) Discontinuous
theory of matter 400 BC Greeks (Aristotle ~350 BC)) Continuous theory of matter ALCHEMY 300 AD 1000
Issac Newton (1642 - 1727) 2000 Alchemy In Europe, alchemy was the quest for the Philosophers Stone (the elixir, the Sorcerers Stone). Allegedly, this substance would turn cheap metals into gold. transmutation
changing one substance into another Philosophers Stone COPPER GOLD In ordinary chemical reactions, we cannot transmute elements into different elements.
Alchemy After that 'chemistry' was ruled by alchemy. They believed that that could take any cheap metals and turn them into gold. Alchemists were almost like magicians.
SILVER COPPER .. . ...... . ..... IRON SAND transmutation: changing one substance into another
D In ordinary chemistry, we cannot transmute elements. Alchemy (~500 1300 A.D.)the quest for the Philosophers Stone It was supposed to change cheap Alchemical symbols for metals into gold. substances
GOLD The Alchemist, by David Teniers .. . .. .......... SILVER COPPER IRON SAND
transmutation: changing one substance into another In ordinary chemistry, we cannot transmute elements. Contributions of alchemists: lab apparatus / procedures how to make some alloys Contributions of alchemists: Information about elements - the elements mercury, sulfur, and antimony were discovered - properties of some elements Develop lab apparatus / procedures / experimental techniques - alchemists learned how to prepare acids.
- developed several alloys - new glassware A Timeline of Chemistry Motivation for Alchemists To discover a mixture for eternal living! To transform metals into gold However, alchemists did not follow a scientific method! Trial error based experiments No Systematic Knowledge
No theories behind Alchemy Chemistry ! ATOM Sources Used Kuantum Dnemi, Robert Crease & Alfred Goldhaber Kimyann yks Popler Bilim Kitaplar
Thomas G. Aylesworth, The Alchemists Magic into Science Addison-Wesley, 1973, pg 11-12. Kimya Popler Bilim Kitaplar Ortaretim Kimya 9 Ders Kitab, Mehmet Gntut
Anatomy of a Position vs time graph. The x-axis represents time. The Y-axis represents the object's position relative to the origin. The origin represents where the observer is standing. Any points above the x-axis are on the positive side of....
Submit records retention schedules to NARA for approval in a timely fashion. Ensure the proper disposition of Federal records in accordance with an approved records retention schedule. Provide training and guidance, as appropriate, to all agency employees and contractorsregarding their...
Ch.08 Cost advantage 53 54 Ch.8 Cost advantage 1-Strategy and cost advantage 2-Sources of cost advantage 3-Analysis of cost: value chain Themes of chapter 55 Ch.8 Cost advantage (Ctd.) 1-Strategy and cost advantage First preoccupation was cost Large corporations Search...
16 data sets (N>1000) from Newell (UNSW) and Rakow (Essex) labs across range of 'unconscious thought' experiments - i.e., Evidence to support no difference between "conscious" and "unconscious" (distracted) thought.
Offline Extraction vs. Online Querying. Batch formulation of the problem: Discover all pairs with similarity greater than . s. Useful for post-hoc batch processing of web crawl. Online formulation of the problem: Given new webpage, is it similar to one...
Cause & consequence, historical significance, change & continuity, similarity & difference etc. Progression in Second Order concepts. Dominant means of assessment in Key Stage 3. Students asked to improve their disciplinary thinking by moving up through ladder like stages.
Ready to download the document? Go ahead and hit continue!