https://padlet.com/mettudahi/amviy76csl8ygark Atoms are made up of three participes: Protons, Neutrons and Electrons. en-us 2023-02-09 11:07:12 UTC 2026-01-03 14:46:39 UTC hello@padlet.com https://padlet.net/icons/png/2697.png mettudahi https://padlet.com/mettudahi/amviy76csl8ygark/wish/2474853178 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 11:22:28 UTC https://padlet.com/mettudahi/amviy76csl8ygark/wish/2474853178 mettudahi https://padlet.com/mettudahi/amviy76csl8ygark/wish/2474857145 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 11:26:33 UTC https://padlet.com/mettudahi/amviy76csl8ygark/wish/2474857145 mettudahi https://padlet.com/mettudahi/amviy76csl8ygark/wish/2474858685 He discovered negatively charged particles inside the atom (electrons). 

]]> 2023-02-09 11:28:01 UTC https://padlet.com/mettudahi/amviy76csl8ygark/wish/2474858685 mettudahi https://padlet.com/mettudahi/amviy76csl8ygark/wish/2483149386 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 08:31:21 UTC https://padlet.com/mettudahi/amviy76csl8ygark/wish/2483149386 mettudahi https://padlet.com/mettudahi/amviy76csl8ygark/wish/2483152273 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. 

]]> 2023-02-15 08:34:00 UTC https://padlet.com/mettudahi/amviy76csl8ygark/wish/2483152273 mettudahi https://padlet.com/mettudahi/amviy76csl8ygark/wish/2483153939 He proposed that electrons do not travel in definite paths around the nucleus.

]]> 2023-02-15 08:35:28 UTC https://padlet.com/mettudahi/amviy76csl8ygark/wish/2483153939