Early Philosphers believed all matter to be made of what four basic elements?
Choose the 4 parts that apply to Democratis' idea of matter. (all correct answers must be marked for credit)
Aristotle believed, and taught,
Choose the parts of Dalton's Atomic Theory (all correct answers must be chosen for credit)
Who conducted the oil-drop experiment?
What was important about the oil-drop experiment?
How long was it between Democratis' ideas about the atom and Dalton's Atomic Theory?
How long was it between Dalton's Atomic Theory, and the experiments that began to modify it by finding sub-atomic particles?
What was concluded by the gold-foil experiment?
Which scientist discovered the neutron?
Choose the scientists whose work identified sub-atomic particles. (all, but only the correct answers must be chosen for credit)
What experiment identified the electron?
Which scientist first suggested electrons in 'planetary orbits', and which other scientist confirmed these levels spectroscopically?
Whose theory indicated a wave nature not only for electrons, but for all matter?
The theory that an electron wave equation predicted the probability of the location of an electron was presented by whom?
The idea that one cannot measure exactly both the location and velocity of an electron is called the
In the Plum-Pudding Model,
Gas discharge tubes and a spectroscope were used by whom to identify elements?
Spectroscopy led to the identification of distinct _____.
The Atomic Model has remained essentially the same for the last 150 years.