Atomic Theory Scientist Crossword

Convention bitter, convention sweet, but in reality atoms and void
Proposed an “atomic theory” with spherical solid atoms based upon measurable properties of mass
Studied the effect of electricity on solutions.
Studied “canal rays” and found they were associated with the proton H+
Studied radiations emitted from uranium and thorium and named them alpha and beta
Studied uranium and thorium and called their spontaneous decay process “radioactivity”
Used the idea of quanta (discrete units of energy) to explain hot glowing matter
Oil drop experiment determined the charge (c=1.602•10^-19 coulomb) and the mass (m= 9.11• 10^-28 gram) of an electron.
Using alpha particles as atomic bullets, proved the atoms in a piece of thin (0.00006 cm) gold foil.
Using X-ray tubes , determined the charges on the nuclei of most atoms. He wrote “The atomic number of an element is equal to the number of protons in the nucleus”
Developed an explanation of atomic structure that underlies regularities of the periodic table of elements.
Using alpha particles discovered a neutral atomic particle with a mass close to a proton. Thus was discovered the neutron.
Proposed a mechanical universe with small solid masses in motion
Published the famous equation E=mc^2
Arranged elements into 7 groups with similar properties.