Atomic Scientists - Secondary Info

Meaning of Atomos

Indivisible

Meaning of Indivisible

Cannot be divided into smaller pieces

Dalton Principle 1

All elements are made of tiny indivisible atoms

Dalton Principle 2

Atoms of the same element are identical, while atoms of different elements are different

Dalton Principle 3

Atoms can physically mix or chemically combine in simple whole number ratios

Dalton Principle 4

Chemical reactions separate, join, or rearrange atoms

Dalton Principle 5

Chemical reactions cannot change atoms of one element into another

Dalton Solid Ball Model

Atoms are solid spheres

Thomson Experiment

Cathode ray tube experiment

Plum Pudding Model

A positively charged sphere with negatively charged electrons embedded inside

Rutherford Experiment

Gold foil experiment

Rutherford Atomic Model

Planetary Model

Chadwick Later Work

Worked with nuclear energy

Bohr Model

Electrons occupy specific energy levels surrounding the nucleus

Millikan Experiment

Oil drop experiment

Heisenberg Other Contribution

Studied electron behavior and improved upon the Bohr Model

Uncertainty Principle Meaning

Cannot know an electron's exact position and momentum simultaneously

Schrodinger Field of Study

Quantum mechanics

Quantum Mechanical Model

Describes electron behavior using quantum mechanics

Electron Wave and Particle Behavior

Electrons behave as both waves and particles

Mendeleev Nationality

Russian chemist