1 / 11

D e v e l o p i n g o u r m o d e l o f a n a t o m

D e v e l o p i n g o u r m o d e l o f a n a t o m. D e m o c r i t u s. A G r e e k p h i l o s o p h e r i n t h e y e a r 4 0 0 B C .

Télécharger la présentation

D e v e l o p i n g o u r m o d e l o f a n a t o m

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. D e v e l o p i n g o u r m o d e l o f a n a t o m

  2. D e m o c r i t u s • A G r e e k p h i l o s o p h e r i n t h e y e a r 4 0 0 B C . • H e u s e d t h e w o r d A t o m o s t o d e s c r i b e t h e s m a l l e s t p o s s i b l e p i e c e o f m a t t e r .

  3. J o h n D a l t o n P r o p o s e d t h e f i r s t a t o m i c t h e o r y i n 1 8 0 3

  4. D a l t o n ‘ s T h e o r y • A l l e l e m e n t s a r e c o m p o s e d o f i n d i v i s i b l e p a r t i c l e s . • A t o m s o f t h e s a m e e l e m e n t a r e t h e s a m e . • A t o m s o f d i f f e r e n t e l e m e n t s a r e d i f f e r e n t . • C o m p o u n d s a r e f o r m e d b y j o i n i n g a t o m s o f t w o o r m o r e e l e m e n t s .

  5. J. J. T h o m p s o n T h e E n g l i s h s c i e n t i s t w h o d i s c o v e r e d e l e c t r o n s i n 1 8 9 7 .

  6. E r n e s t R u t h e r f o r d T h e B r i t i s h p h y s i c i s t w h o, i n 1 9 0 8, p r o v e d t h e a t o m h a d a s m a l l, d e n s e, p o s i t i v e l y c h a r g e d n u c l e u s .

  7. N i e l s B o h r T h e D a n i s h s c i e n t i s t w h o , i n 1 9 1 3 , p r o p o s e d t h e p l a n e t a r y m o d e l o f t h e a t o m .

  8. B o h r ‘ s M o d e l

  9. T h e W a v e M o d e l • B a s e d o n w a v e m e c h a n i c s • E l e c t r o n s t r a v e l i n n o d e f i n i t e p a t h . • T h e p r o b a b l e l o c a t i o n o f a n e l e c t r o n i s b a s e d o n h o w m u c h e n e r g y t h e e l e c t r o n h a s .

  10. Temp ( oC ) 100 80 60 40 30 20 10 0 Volume ( ml ) 317 297 288 278 252 243 236 233

  11. A t o m M o d e l E n d

More Related