Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Atomul - recapitulare

http://www.youtube.com/watch?v=WXJTYVH8yQM&feature=related
by

lupsa simona

on 27 November 2012

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Atomul - recapitulare

Atomul prof. Lupsa Simona Atomul este cea mai mica particula dintr-o substanta care, prin procedee chimice obisnuite, nu poate fi fragmentata in particule mai simple. Caracteristicile atomilor: -particule materiale neutre din punct de vedere electric;
-au dimensiuni extrem de reduse;
-pot exista independent;
-au o structura complexa. Z-numar atomic X A-numar de masa Atomul Nucleu Invelis electronic nucleoni electroni protoni neutroni -sarcina electrica pozitiva +1
-masa 1uam
-numarul protonilor=Z 1 p +1 -neutri din punct de vedere electric -masa 1uam -nr. neutronilor=A-Z n 0 1 -sarcina electrica negativa -masa neglijabila -nr. electronilor = Z 0 -1 e Atomul Nucleu Invelis electronic nucleoni electroni protoni neutroni -sarcina electrica pozitiva +1
-masa 1uam
-numarul protonilor=Z 1 p +1 -neutri din punct de vedere electric -masa 1uam -nr. neutronilor=A-Z n 0 1 -sarcina electrica negativa -masa neglijabila -nr. electronilor = Z 0 -1 e sarcina nucleara "+Z" Atomul Nucleu Invelis electronic nucleoni electroni protoni neutroni -sarcina electrica pozitiva +1
-masa 1uam
-numarul protonilor=Z 1 p +1 -neutri din punct de vedere electric -masa 1uam -nr. neutronilor=A-Z n 0 1 -sarcina electrica negativa -masa neglijabila -nr. electronilor = Z 0 -1 e -sarcina "-Z" sarcina invelisului"-Z" masa concentrata in nucleu
A=Z+n neutru
din punct de
vedere electric Atomul Nucleu Invelis electronic nucleoni electroni protoni neutroni -sarcina electrica pozitiva +1
-masa 1uam
-numarul protonilor=Z 1 p +1 -neutri din punct de vedere electric -masa 1uam -nr. neutronilor=A-Z n 0 1 -sarcina electrica negativa -masa neglijabila -nr. electronilor = Z 0 -1 e Va multumesc!
Full transcript