Scientists from nuclear packet

democritus

believed matter was composed of small invisible particles, called them atomos

Marie Curie

the only person to be awarded Nobel prizes in two different sciences. one in physics for research on radioactivity, and another on chemistry for discovering polonium and radium

Dimitri Mendeleev

created a table where elements were grouped together based on similar behavior. left some spots empty, but predicted existence of elements that would fill those spaces

Antoine lavosier

suggested that matter is neither created nor destroyed. published "elementary treatise on chemistry"

Joseph proust

established law of definite proportions

Amadeo Avogadro

proposed that, at the same temp and pressure, equal volumes of different gases contained the same number of particles. invented value for counting particles (Avogadro's number)

Robert boyle

refuted alchemy and emphasized importance of experimentation. turned alchemy into respectable science called chemistry.

Robert millikan

oil droplet experiment, which led to discovery of the charge of a single electron

Henry Moseley

arranged the periodic table in order of increasing nuclear charge

henri bequeral

Discovered naturally radioactive uranium

Roger Bacon

13th century, attempted to lay out a formal system of scientific study based on experimentation and observation but decided to still involve formal, Orthodox religion

Stanislao Cannizzaro

presented a convincing method for accurately measuring the relative masses of atoms

Lisa meitner

The politics of World War II prevented this scientist from receiving the Nobel Prize in physics for explaining nuclear fission

Glenn Seaborg

Nobel prize for chemistry for research on transuranium elements and construction of actinide series

James Chadwick

Discovered the neutron

Ernest Rutherford

discovered nucleus thu gold foil experiment

Wihelm Roentgen

discovered x-rays

irene curie and Frederic joliot

discovered artificial radioactivity

hans geiger

Co-invented the Geiger counter with Rutherford. this device

Joseph Priestly

discovered oxygen, which was called dephlogisticated air and was believed to be low in pholgiston