1900-1915+(Mark+Holmes)


 * __1900-1915 Final__

Marie Curie (1867-1934)**

Marie curie was a scientist born in Warsaw,Russia in 1867. Marie was the first person to recieve a Nobel Prizes. Marie recieved the Noble Prize in Physics in the year 1903 and also reecieved a Nobel Prize in Chemsitry in 1911. In Marie's time, women were not yet thought of as equals to men, and her achievements were a blatent example of how women can contribute to society along with men. She was an extremely determined scientist as shown through her Nobel Prize's and she her acomplishments were made with the help of her Husband Pierre Curie.

Marie Curie had an enormous inpact on the chemsitry world. "In 1903, the Royal Swedish Academy of Sciences awarded Pierre Curie, Marie Curie, and Henri Becquerel Nobel Prize in Physics "in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel" ([]). This was the first award Marie recieved for her work with radiatio. Then in 1911, Marie was awarded yet again with the Nobel Prize "in recognition of her services to the advancement of chemistry by the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of this remarkable element ([]). After the discoveries of rays by Roentgen, Marie was determined to whether there were any other elements that could give off radiation and through extremely difficult and tedious experiments. She discovered that both radium and polonium were highly radioactive. Through her discoveries of Radium and Polonium, Marie better helped the world understand chemsitry and the atom. Before, it was difficult for people to believe that there were atoms with such radiation, but shortly after her discoveries these new elements Marie discovered were added on the periodic table and the understanding of radiation increased significantly. Also, Marie somwhat led to the idea of treatment of diseases used today thorugh radiation. Overall, Marie Curie is considered to be pioneer per say of the chemistry world for her remarkable discoveries.

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[] ....**Educational rap on Neils Bohr and his life!!**
 * Neils Bohr (1885-1962)**

Neils Bohr was a physicst who was born in Copenhagen, Denmark in the year 1885. Borh grew up around physics along with his brother due to the fact that his father was a physiologist. Borh worked in Manchester, England at Earnest Rutherford's lab and was influenced by him tremendously during his younger years as a physicist. Bohr also had a close reltionship with fellow phsicist Heinsburg and I beleive that many of his ideas and such could have been because he was highly influenced by some of histories other great chemsits and physicists. In Bohr's lifetime, he is most recognized for the Bohr Model of the atom, which was built off of the Plum Pudding and Rutherford model's. In 1932 Borh was awarded the Nobel Prize for, " his services in the investigation of the structure of atoms and of the radiation emanating from them"([]). Many people today call it the Rutherford-Borh model due to the fact that if it wasn't for Rutherford, there wouldn't have been a Borh model. Aside from the Borh model, Neils is also well known for his work in the Manhatten Project during World War II.

Of all of the great contributions to science Borh has done, the Borh Model is by far the greatest. Borh took the previous Plum Pudding and Rutherford Model's and expanded it into futher undrstanding for the world. Bohr published his theory about the atoms structure in 1913, and he based it off of his mentor's model. Rutherford claimed in his model that the atom"consisted of a positively charged nucleus, with negatively charged electrons around it." ([]). However, Bohr took this and exapnded, saying that electrons "travel only in certain successively larger orbits." ([]). Borh also claimed that the outer orbits could hold more electrons than the inner orbits and that the outer orbits, "determine the atom's chemical properties" ([]). So basically, Bohr's model highly impacted the way people viewed the atom at that point in time.


 * Rutherford Bohr Model**

Shown above are pictures of Neil Bohr's infamous Rutherford-Bohr Model and what exactly in involved in the model. Before this model scientists knew that electrons were orbiting around the positively charged nucleus. However, as shown in these models above, Bohr added orbits to that. Furthermore, with the orbits, Bohr claimed that electrons only orbit in "sucessively" larger orbits. Bohr also discovered that the outer orbits could hold more electrons that the electrons located in the inner orbits.

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