https://padlet.com/naderbastida/hbeqxrbe8q65nwas Everything is made of ATOMS. They are really small (tiny) particles. They are so small that we cannot see them with our eyes. ATOMS are made up of three particles: protons, neutrons and electrons. en-us 2023-02-10 11:08:46 UTC 2023-02-14 09:35:59 UTC hello@padlet.com https://padlet.net/icons/png/1f52c.png naderbastida https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476274383 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 11:10:58 UTC https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476274383 naderbastida https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476275778 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 11:12:27 UTC https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476275778 naderbastida https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476276728 He discovered negatively charged particles inside the atom (electrons). ]]> 2023-02-10 11:13:27 UTC https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476276728 naderbastida https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476278488 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 11:15:17 UTC https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476278488 naderbastida https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476279424 He improved on Rutherford's model. He proposed that electrons move around the nucleus in certain paths called energy levels. ]]> 2023-02-10 11:16:18 UTC https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476279424 naderbastida https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476280212 He proposed that electrons do not travel in definite paths around the nucleus.]]> 2023-02-10 11:17:06 UTC https://padlet.com/naderbastida/hbeqxrbe8q65nwas/wish/2476280212