-
300
phylosophers stone
it ia a alchemical substance said to beable to turn regular metals like lead into gold -
400
priestly
Primarily a product of the post-Exilic period -
Mar 13, 650
elixir of life
a legendary potion, or drink, that grants the drinker eternal life -
Francis bacon
publishes The Proficience and Advancement of Learning, which contains a description of what is now known as the scientific method -
robert boyle
considerded the first modern chemist -
pologiston theory
this is a 17th century attempt to explain oxidization. (fire and rust) -
cavendish
a British scientist noted for his discovery of hydrogen or what he called "inflammable air" -
lavoisier
a chemist who named oxygen and hydrogen -
Joseph black
isolates carbon dioxide and calls it "fixed air" -
dalton
He is best known for his pioneering work in the development of modern atomic theory -
avogardro
He is most noted for his contributions to molecular theory, including what is known as Avogadro's law -
Alessandro Volta
creates the first chemical battery, founding the discipline of electrochemistry -
joseph louis gay lussac
Discovers that water is composed of two parts hydrogen and one part oxygen -
Lord Kelvin
Creates the concept of absolute zero, the temperature that all molecular motion stops -
Benjamin Silliman, Jr
creates methods of petroleum cracking, which makes the entire modern petrochemical industry possible -
jj thomspon
He is credited for the discovery of the electron and of isotopes -
Alexander Parkes
exhibits Parkesine, one of the first synthetic polymers -
Lothar meyer
makes on of the first versions of the periodic table, with 28 elements -
Dmitri Mendeleev
publishes the first modern periodic table with 66 elements -
rutherford
he discovered the concept of radioactive half-life, proved that radioactivity involved the transmutation of one chemical element to another -
Svante Arrhenius
creates the ion theory to explain conductivity in electrolytes -
William Ramsay
discovers the noble gases, filling a gap in the periodic table -
pitchblend
this substance is what many chemists used to find elements such as uranium, polonium and radium. -
J. J. Thomson
discovers the electron using the cathode ray tube -
Hantaro Nagaoka
makes one of the first nuclear models of the atom, where electrons orbit the nucleus -
s.p.l Sorensen
invents the pH concept and makes methods for measuring acidity -
bhor
depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus -
chadwick
He was the primary British scientist who collaborated in the Manhattan Project during World War II -
bucky ball
is the smallest fullerene molecule containing pentagonal and hexagonal rings in which no two pentagons share an edge -
bronze age
the period after the stone age but before the iron age. it this period there was no ability to smelt.