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4 cards from this section. Quick, good the night before a test.
What term did Democritus use to describe indivisible particles?
Think of a Greek term that means 'uncuttable'.
Which subatomic particle did J.J. Thomson discover?
It's negatively charged and found outside the nucleus.
What did Democritus believe about matter?
He used a Greek word meaning 'uncuttable' to describe these particles.
Which scientist is known for the discovery of the electron?
Think of the scientist who experimented with cathode rays.
Compare and contrast the atomic models proposed by Dalton, Thomson, and Rutherford. Discuss the significance of each discovery.
Think about how each theory builds on the previous one to create a more complex understanding of atoms.
Explain how the understanding of isotopes impacted atomic theory following the discovery of neutrons.
Consider the implications of neutrons existing without charge alongside protons in the nucleus.
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