https://padlet.com/mararrieta/ods15npcvcqx77eq Everything is made of atoms en-us 2023-02-09 11:06:55 UTC 2023-02-15 08:58:09 UTC hello@padlet.com https://padlet.net/icons/png/1f4e1.png mararrieta https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474851163 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 11:20:29 UTC https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474851163 mararrieta https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474853613 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 11:22:55 UTC https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474853613 mararrieta https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474855215 He discovered negatively charged particles inside the atom (electrons). 

]]> 2023-02-09 11:24:34 UTC https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474855215 mararrieta https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474856825 He proposed that in the center of the atom is positively charged part called the nucleus. He discovered the protons and nucleus. ]]> 2023-02-09 11:26:17 UTC https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474856825 mararrieta https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474858025 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. ]]> 2023-02-09 11:27:25 UTC https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474858025 mararrieta https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474859569 He proposed that electrons do not travel in definite paths around the nucleus.]]> 2023-02-09 11:28:54 UTC https://padlet.com/mararrieta/ods15npcvcqx77eq/wish/2474859569