CHEM 1211 - Experiments Flashcards
Name the experiment, the scientist who conducted it, and the discovery made by the results
Cathode ray measuring “canal rays.”
Eugene Goldstein conducted this experiment and discovered protons
Name the experiment, the scientist who conducted it, and the discovery made by the results
The Oil Drop Experiment
Robert Millikan used this experiment to discover the definite mass and charge of electrons
Name the experiment, the scientist who conducted it, and the discovery made by the results
Gold foil and alpha particles.
Rutherford supervised Geiger and Marsden in this experiment that showed atoms are mostly empty space surrounding a dense center, or nucleus.
This disproved Thompson’s Plum Pudding atom model and supplied the Rutherford model
Name the experiment, the scientist who conducted it, and the discovery made by the results
Be Foil and alpha particles
James Chadwick used this experiment to discover neutrons
What is this device?
Who invented it?
How does it work?
Mass spectrometer
Francis Aston
Generates ions that flow down a path through a magnet and are separated out based on their mass
Describe the experiment, the scientist who conducted it, and the discovery made by the results
The experiment had no real name but was part of Louis de Broglie’s Phd dissertation.
It established that electrons have wave-like properties, and it was later established that electrons have both particle and wave properties.
The wavelength of a particle is described by the de Broglie relationship, pictured below:
