+3 PROTON POINTS

Group 2: Alkaline Earth Metals

+2 PROTON POINTS

Group 2: Alkaline Earth Metals

10 POINTS

Elaine, Nica, Christine and Natalia
-Born: Dec 15, 1852 Died: Aug 25, 1908
-By accident, he discovered that uranium salts emit a penetrating radiation discovering radioactivity in 1896
-His work with radioactive materials, may have contributed to his death

10 POINTS

Elaine, Nica, Christine and Natalia
-British chemist and physicist noted for his discovery of the element thallium
-Associated with the use of cathode-ray tubes and he demonstrated that cathode rays travel in straight lines
-Developed a device for studying alpha particles

10 POINTS

Elaine, Nica, Christine and Natalia
-Born September 6, 1766; died July 26, 1844
-First person to research about colour blindness which then became known as Daltonism
-First person to develop model of atom; proposed that the atom was the smallest particle of matter; indivisible sphere with a uniform density

10 POINTS

Elaine, Nica, Christine and Natalia