Choose a scientist and explore his or her discoveries. Be able to explain how those discoveries have had an impact on our world today. In class, you will speak as if you are that person to create a living timeline about the history of atomic advancements.
Dimitri Mendeleev: Arranged elements into 7 groups with similar properties. This became the periodic table.
Max Planck: Discovered quanta energy packets
J.J. Thomson: Used cathode rays to discover particles had an electric charge
Sir William Crookes: Discovered cathode rays and crooke tubes
G.J. Stoney: Proposed that electricity was made of discrete negative particles he called electrons
Marie Curie: Discovered the radioactive elements polonium and radium. Marie was the first person awarded two Nobel prizes!
Source: ImageQuest
