https://padlet.com/3479181/afwv0vwz92if Made with ATOMS en-us 2019-02-05 17:10:10 UTC 2025-10-23 03:40:49 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Watchclock.png 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327904630 DEMOCRITUS WAS A GREEK PHILOSOPHER WHO DEVELOPED AND SYSTEMATIZED CLASSICAL ATOMISM. HIS THEORY STATED THAT THE WORLD WAS MADE UP OF HARD, INDIVISIBLE PARTICLES MOVING THROUGH EMPTY SPACE.]]> 2019-02-05 17:29:18 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327904630 2210681 https://padlet.com/3479181/afwv0vwz92if/wish/327904752 ERNEST RUTHERFORD WAS A NEW ZEALAND-BORN PHYSICIST WHO CAME TO BE KNOW AS THE FATHER OF NUCLEAR PHYSICS. HE PROPOSED THAT AN ATOM IS COMPOSED OF EMPTY SPACE MOSTLY WITH ELECTRONS ORBITING IN THE SET,]]> 2019-02-05 17:29:32 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327904752 2210681 https://padlet.com/3479181/afwv0vwz92if/wish/327913578 NIELS BOHR WAS A DANISH PHYSICIST WHO MADE FOUNDATIONAL CONTRIBUTIONS TO UNDERSTANDING ATOMIC STRUCTURE AND QUANTUM THEORY. IN THE BOHR MODEL OF THE ATOM, ELECTRONS TRAVEL IN DEFINED CIRCULAR ORBITS AROUND THE NUCLEUS.]]> 2019-02-05 17:44:10 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327913578 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327918387 DALTON AGREED WITH DEMOCRITUS' THEORY THAT ALL MATTER IS COMPOSED OF SMALL, INDIVISIBLE, AND INDESTRUCTIBLE BUILDING BLOCKS CALLED ATOMS. HOWEVER, HE FURTHER WENT ON TO STATE THAT WHILE ALL ATOMS OF AN ELEMENT WERE THE SAME, DIFFERENT ELEMENTS HAD ATOMS OF DIFFERENT SIZES AND MASSES.]]> 2019-02-05 17:48:26 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327918387 2210681 https://padlet.com/3479181/afwv0vwz92if/wish/327920467 JAMES CHADWICK WAS A BRITISH PHYSICIST WHO WAS AWARDED THE NOBEL PRIZE IN PHYSICS FOR HIS DISCOVERY OF NEUTRON. BECAUSE OF THE PRODUCED UNKNOWN RADIATION DUE TO BOMBARDED BERYLLIUM ATOMS, IT WAS INTERPRETED FOR THE RADIATION TO BE COMPOSED OF PARTICLES WITH A NEUTRAL ELECTRICAL CHARGE AND THE APPROXIMATE MASS OF A PROTON. THIS PARTICLE BECAME KNOWN AS THE NEUTRON.]]> 2019-02-05 17:51:30 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327920467 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327923020 DURING ONE OF HIS EXPERIMENTS IN 1897, J.J. THOMSON DISCOVERED THE ELECTRON. HE USED A CROOKES TUBE TO DEMONSTRATE THAT CATHODE RAYS WERE NEGATIVELY CHARGED. FURTHERMORE, HE WENT ON TO STUDY THE POSITIVELY CHARGED PARTICLES IN GASES SUCH AS NEON GAS. MODEL WAS CALLED PLUM PUDDING.]]> 2019-02-05 17:55:25 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327923020 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327927278 MARIE CURIE WAS A PIONEER IN RESEARCHING RADIOACTIVITY. HER THEORY ABOUT ATOMS REVOLVED AROUND THE IDEA THAT THE STRENGTH OF RADIATION FROM RADIOACTIVE MATERIALS DID NOT DEPEND ON THE COMPOUND, RATHER IT DEPENDED ON THE AMOUNT OF MATERIAL IN THE SUBSTANCE. THIS DISCOVERY WAS REVOLUTIONARY IN THE WORLD OF BOTH PHYSICS AND CHEMISTRY.]]> 2019-02-05 18:02:34 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327927278 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327935140 2019-02-05 18:14:41 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327935140 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327935673 2019-02-05 18:15:43 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327935673 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327936302 2019-02-05 18:16:56 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327936302 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327937186 2019-02-05 18:18:24 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327937186 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327938436 2019-02-05 18:20:30 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327938436 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327939004 2019-02-05 18:21:21 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327939004 3479181 https://padlet.com/3479181/afwv0vwz92if/wish/327939998 2019-02-05 18:22:55 UTC https://padlet.com/3479181/afwv0vwz92if/wish/327939998