https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz DFGH en-us 2023-02-09 11:05:32 UTC 2025-12-20 02:56:19 UTC hello@padlet.com https://padlet.net/icons/png/1f682.png iratigarmendia1 https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2474853945 He proposed that matter could not be divided into smaller pieces forever. He said that matter was made of small, hard particles that he called “atoms”. 

]]> 2023-02-09 11:23:16 UTC https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2474853945 iratigarmendia1 https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2474855862 He created the very first atomic theory. 
All substances are made of atoms. Atoms are small particles that cannot be created, divided, or destroyed. Atoms are invisible.
Atoms join together to make new substances (molecules).

]]> 2023-02-09 11:25:18 UTC https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2474855862 iratigarmendia1 https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483146495 He discovered negatively charged particles inside the atom (electrons). 

]]> 2023-02-15 08:28:12 UTC https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483146495 iratigarmendia1 https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483152364 He proposed that in the center of the atom is positively charged part called the nucleus. He discovered the protons and nucleus. 

]]> 2023-02-15 08:34:06 UTC https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483152364 iratigarmendia1 https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483157557 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. 

]]> 2023-02-15 08:39:12 UTC https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483157557 iratigarmendia1 https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483162992 He proposed that electrons do not travel in definite paths around the nucleus.

]]> 2023-02-15 08:44:33 UTC https://padlet.com/iratigarmendia1/kjmw2f6bjpqy1piz/wish/2483162992