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Atomic theory: a history of the atom — Homework
For each question, name the scientist and describe the evidence in your own words.
- 1.Whose experiment showed that atoms are mostly empty space with a dense nucleus?
- 2.Whose experiment discovered the electron using a cathode-ray tube?
- 3.Which model pictured the atom as a positive sphere with electrons scattered through it?
- 4.Which model first proposed electrons in fixed, specific energy levels?
- 5.Explain why a small number of particles bouncing nearly straight back in the gold foil experiment was so surprising, and what it proved about atomic structure.
🌲 Homeschool of the FutureTenth Grade · Science · week 5 homework