https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r Everything is made of atoms en-us 2023-02-15 08:29:36 UTC 2023-02-15 08:45:44 UTC hello@padlet.com https://padlet.net/icons/png/1f52c.png chakirmaalmine https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483153853 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”. ]]> 2023-02-15 08:35:23 UTC https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483153853 chakirmaalmine https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483154671 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).]]> 2023-02-15 08:36:08 UTC https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483154671 chakirmaalmine https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483158974 He discovered negatively charged particles inside the atom (electrons). 

]]> 2023-02-15 08:40:49 UTC https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483158974 chakirmaalmine https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483160090 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 08:41:56 UTC https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483160090 chakirmaalmine https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483162518 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. ]]> 2023-02-15 08:44:02 UTC https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483162518 chakirmaalmine https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483164253 He proposed that electrons do not travel in definite paths around the nucleus.]]> 2023-02-15 08:45:44 UTC https://padlet.com/chakirmaalmine/z56ipkrufsr90s5r/wish/2483164253