Final history Flashcards
What is the first component to daltons atomic theory
All matter is made of atoms. Atoms are indivisible and indestructible
What is the second component to daltons atomic theory
All atoms of a given element are identical in mass and properties
What is the third component to daltons atomic theory
Compounds are formed by a combination of two or more different kinds of atoms
What is the fourth component to daltons atomic theory
A chemical reaction is a rearrangement of atoms
Dalton experimented where
England during the 1800s
Dalton thought each element had a unique
Mass
Daltona atom did not describe any
Subatomic particles
Where were Thomson and Millikan educated
Oberlin college Ohio
Millikans oil drop experiment determined
The mass to charge ratio of the electron by suspending an oil drop of known mass using a magnetic field
What experiment takes Thomson to his plum pudding model
Cathode ray tube
What about thomsons plum pudding model that is different from previous models
Showed that most of the atom was positively charged
What did James Chadwick discover
Neutrons in the nucleus
What observation led Chadwick to conclude there must be something besides just the proton in the nucleus of atoms
By hitting the beryllium plate, he discovered some particles were neutral and called them neutrons
The discovery of the neutron led to the discovery and explanation of
How the nucleus is held together known as the Nuclear Strong Force
James Chadwick won the Nobel prize in
Physics in the year 1935
Rutherfords contribution to the atomic theory is most famously recognized by
His gold foil experiment
Rutherfords experimentation led to the discovery and acceptance of
The nucleus
Before rutherfords experimentation, the atom was thought to be ——
However after his research it was accepted that an atom is ——
A solid particle
Mostly empty space
Where did Bohr work
Copenhagen Denmark
In us on manhatten project
Bohr proposed
That electrons occupy energy levels thus preventing them from moving into the nucleus
Bohr discovered that electrons absorb only specific amounts of —-. They Lose it in the form of —- that we see as —-
Energy
Radiation
Colored light
Bohrs model only worked for
Elements with only one electron
What was heisenberga first name
Werner
Heisenberg was rewarded the novel peace price in physics in 1932 for the creation of
Quantum mechanics
