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Questions and Answers
What was the significance of the particles that were deflected or bounced back in Rutherford's experiment?
What was the significance of the particles that were deflected or bounced back in Rutherford's experiment?
- They suggested that the atom is composed mainly of empty space
- They proved that the nucleus was negatively charged
- They indicated the presence of electrons surrounding the atom
- They were evidence of a positively charged nucleus at the center of the atom (correct)
How did Rutherford's experiment alter the existing model of the atom?
How did Rutherford's experiment alter the existing model of the atom?
- It suggested that the atom's mass is concentrated in a small nucleus (correct)
- It proposed that electrons orbit in defined planetary paths
- It demonstrated that atoms have no internal structure
- It introduced the concept of electrons moving in fixed orbits
What characteristic of the atom did Rutherford's experiment primarily reveal?
What characteristic of the atom did Rutherford's experiment primarily reveal?
- Atoms are predominantly negatively charged
- Atoms lack a defined nucleus
- The electrons are confined strictly to the nucleus
- The atom is mostly composed of empty space (correct)
In Rutherford's experiment, what role did the gold foil play?
In Rutherford's experiment, what role did the gold foil play?
Which component of the atom was predicted by Rutherford based on his experiment?
Which component of the atom was predicted by Rutherford based on his experiment?
Flashcards
Rutherford's Experiment
Rutherford's Experiment
An experiment demonstrating atomic structure by firing charged particles at a thin sheet of atoms.
Empty Space in Atoms
Empty Space in Atoms
Most of an atom's volume is empty space, allowing particles to pass through.
Atomic Nucleus
Atomic Nucleus
A tiny, dense, positively charged center within an atom.
Electrons
Electrons
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Deflection of Particles
Deflection of Particles
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Study Notes
Rutherford's Atomic Model
- Rutherford's experiment involved firing positively charged particles at a thin gold foil.
- Most particles passed straight through, indicating mostly empty space within atoms.
- Some particles were deflected, implying a positive charge concentrated in a small, dense region (the nucleus).
- A few particles bounced back, demonstrating the nucleus's significant mass and positive charge.
- Atoms are mostly empty space with a dense, positively charged nucleus at the center.
- Electrons orbit the nucleus in a cloud-like structure.
- Rutherford's findings revolutionized the understanding of atomic structure.
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