John Dalton

Chemist 1766-1844

Parker POINTS

Home: United Kingdom
Awards: Royal Medal
Notable Students: James Prescott Joule
Quote: This paper will no doubt be found interesting by those who take an interest in it.


Graphic by Eric Hamber Secondary

Discovery/Theory card

Development of Atomic Theory/Laws

Parker POINTS

Theory: The atom is the smallest particle of indivisible matter / Each element’s atoms are only identical to each other / Atoms of different elements combine in specific ratios to form compounds / In a chemical reaction, atoms are separated, rearranged, and recombined to form new compounds


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Joseph John Thomson

1856–1940

Fontaine Chu, Krystal Xie and Ryan Yu POINTS

was an English physicist

discovered the electron in a high-vacuum cathode-ray tube

interpreted the deflection of the rays by electrically charged plates


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J. J. Thomson

Physicist 1856-1940

Parker POINTS

Home: United Kingdom
Awards: Nobel Prize in Physics, Royal Medal, Copley Medal, and several more
Notable Students: Rutherford, Oppenheimer, and many more
Quote: A scientific theory is a tool and not a creed


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Antoine Henri Becquerel

1852-1908

Fontaine Chu, Krystal Xie and Ruan Yu POINTS

born in Paris, France

his field is nuclear physics

discovered radioactivity

craters on the Moon and Mars are named for him


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William Crookes

1832-1919

Fontaine Chu, Krystal Xie and Ryan Yu POINTS

born in London

was a chemist and physicist

the discovery of thallium and research in cathode rays


Graphic by Eric Hamber Secondary