CHEM 101 Lecture Notes - Lecture 6: Dmitri Mendeleev, Kinetic Theory Of Gases, Ernest Rutherford
Document Summary
As the x-ray spectroscope lines increase by one, so also- the positive charge in the atom increases by one. Henry mosley-rearranged the periodic table according to atomic number. Spectroscopy-examine the spectrum; scientists found many new elements using this. Radioactive decay rates-are random; they can take seconds to years. Tubal-cain: instructor of every craftsman in bronze & iron. Robert boyle (1627-1691)-physicist who said nothing can be known beyond all doubt. In 1911, he postulated that atoms have their positive charge (protons) concentrated in a very small nucleus. In order to date rocks to millions of years you would need unchanging decay rates. Different atomic weight/mass the number of protons plus the number of neutrons half-life: length of time required for half of the radioactive atoms in a sample to decay. Since p (pressure) is proportional to 1/v (one over volume), the decreasing volume increases the number of collisions per area, thus causing p to increase.
