https://padlet.com/beaumontunified/7di52p8ontej6si4 Made with charm en-us 2020-10-02 23:18:22 UTC 2025-10-06 23:07:12 UTC hello@padlet.com jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799280539 3) Dalton didn't believe in the existence of the atom]]> 2020-10-02 23:22:52 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799280539 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799294857 3) Democritus was the first person to propose existence of atom]]> 2020-10-02 23:39:02 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799294857 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799311035 3) explains the conversion of mass in chemical reactions]]> 2020-10-02 23:58:52 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799311035 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799313943 3)proves the existence of neutrons and proved that the nucleus had another subatomic particle.]]> 2020-10-03 00:02:21 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799313943 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799317300 3) he found the charge of the electron and that x-rays knock out electrons from the air particles]]> 2020-10-03 00:06:05 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799317300 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799320869 3)studied the positive alpha particles interacted with a solid matter]]> 2020-10-03 00:10:17 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799320869 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799325013 3)he found the ratio of the mass of an electron to its electric charge]]> 2020-10-03 00:15:12 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799325013 jmoreno33432 https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799331404 3)he discovered the ray in a lab when a green flash was produced  from a radiation.]]> 2020-10-03 00:23:19 UTC https://padlet.com/beaumontunified/7di52p8ontej6si4/wish/799331404