Question

Answer the following question about each person.

Years of their life.
Where were they from?
How they described the atom
How did they contribute to the atom model?

Answer 1

Ernest Ruthford
Democritus
JJ Thompson
Shrödinger
John Dalton
Neil's Bohr
Werner Heisenberg

Answer 2

@Vocaloid

Answer 3

biography.com will answer the questions about years and country of birth

Answer 4

I can provide a brief summary of their findings

Answer 5

https://www.britannica.com/science/Rutherford-atomic-model

Rutherford proposed the model of the atom as a series of electrons orbiting a nucleus composed of protons/neutrons. His model was the most commonly accepted in the scientific community until the electron cloud model was created.

Answer 6

https://the-history-of-the-atom.wikispaces.com/Democritus

Democritus proposed that matter was composed of indivisible pieces of matter called "atoms" which he proposed were small hard spheres. Though he was wrong about several things (atoms being indivisible or indestructible for one) many of his conclusions are still part of atomic theory.

Answer 7

https://www.britannica.com/science/Thomson-atomic-model

JJ Thompson proposed that atoms were solid positive spheres with negative electrons embedded inside like "plums in a pudding". He was incorrect (electrons are not embedded in atoms) but he successfully integrated the idea of negatively charged and positively charged particles as part of one atom.

Answer 8

https://www.msnucleus.org/membership/html/jh/physical/atomictheory/lesson1/atomic1g.html

Schrodinger first proposed the idea of the electron cloud, the idea that electrons occupy orbitals (probability regions where the probability of finding an electron was high) rather than distinct orbits. His model is the most accurate, and the one most often used by the scientific community for calculations involving the atom.

Answer 9

http://www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html

John Dalton built upon Democtritus' theory by explaining the general mechanism for chemical reactions (exchange of atoms between compounds). He saw atoms as indestructible spheres, where each atom in a given element were identical in mass and other properties.

Answer 10

https://www.nobelprize.org/nobel_prizes/physics/laureates/1922/bohr-facts.html

Bohr introduced the idea of quantization to the atom, where electrons must absorb or emit energies in specific quanta to move between orbits. His model was similar to Rutherford's, where electrons occupy distinct orbits around a nucleus.

Answer 11

http://www.atomicheritage.org/profile/werner-heisenberg

Heisenberg built upon Schrodinger's model and developed the Uncertainty Principle which is a mathematical statement about the location and velocity of an electron. His idea of the electron was similar to Schrodinger's: electrons occupy orbitals rather than distinct elliptical orbits.

Answer 12

Note: this is a very brief overview. your teacher is probably expecting you to do research and go into more detail than this, but this should help you get started.