https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u They are really small (tiny) particles.They are so small that we cannot see them with our eyes. en-us 2023-02-10 11:07:20 UTC 2023-02-14 10:00:29 UTC hello@padlet.com https://padlet.net/icons/png/1f52d.png juleniraeta https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476280519 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 11:17:26 UTC https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476280519 juleniraeta https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476281629 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 11:18:42 UTC https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476281629 juleniraeta https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476282629 He discovered negatively charged particles inside the atom (electrons). ]]> 2023-02-10 11:19:47 UTC https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476282629 juleniraeta https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476283430 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 11:20:38 UTC https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476283430 juleniraeta https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476284147 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. 

]]> 2023-02-10 11:21:25 UTC https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476284147 juleniraeta https://padlet.com/juleniraeta/ss4w2d8k7b5x4e1u/wish/2476284823 He proposed that electrons do not travel in definite paths around the nucleus.

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