https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6 They are really small tiny particles .They are so small that we cannot see them with our eyes en-us 2023-02-10 11:12:23 UTC 2025-12-19 12:54:58 UTC hello@padlet.com denisosinalde https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476283154 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”. ]]> 2023-02-10 11:20:20 UTC https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476283154 denisosinalde https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476284605 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).]]> 2023-02-10 11:21:53 UTC https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476284605 denisosinalde https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476285493 He discovered negatively charged particles inside the atom (electrons).]]> 2023-02-10 11:22:51 UTC https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476285493 denisosinalde https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476286339 He proposed that in the center of the atom is positively charged part called the nucleus. He discovered the protons and nucleus. ]]> 2023-02-10 11:23:36 UTC https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476286339 denisosinalde https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476286957 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. 

]]> 2023-02-10 11:24:13 UTC https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476286957 denisosinalde https://padlet.com/denisosinalde/gxjqzcsi0bk7zas6/wish/2476287879 He proposed that electrons do not travel in definite paths around the nucleus.

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