Famous scientist discoveries Flashcards
What did Democritus discover?
Formed atom theory stating everything is made out of atoms, and that they share a similar structure.
What did Antoine Lavoisier discover?
Disproved the Phlogiston theory and helped form laws of conservation of mass.
When was Democritus born?
Sometime around 460-370 bc
When was Antoine Lavoisier born?
1743
What did John Dalton Discover?
Helped form the atomic theory, and found atoms can not be destroyed nor created.
When did John Dalton make his discovery
1808
What did Hantaro Nagaoka discover?
Elements are composed of atoms, and atoms of elements have the same mass. he also discovered ball in the middle of atoms.
When did Hantaro Nagaoka make his discovery?
1904
What did Ernest Rutherford discover?
Research lead up to the creation of the atomic bomb. And discover atoms are made up of a lot of free space.
When did Ernest Rutherford make his discovery?
1911
What did J.J Thomson discover?
He discover the electron in atoms.
when was J.J Thomson born?
1856
What did Niels Bohr discover?
Discovered the Bohr model of the atom, which states that electrons nucleus in discrete energy levels which are basically electron shells.
When did Niels Bohr make is discovery?
1913
What did James Chadwick discover?
Discovered neutrons and started to discover protons but failed.
