Question 4 — What conclusion did Rutherford draw - Questions at the end of the chapter - Chapter 8 - Journey Inside the Atom (Exploration)

Last updated at July 16, 2026 by

Question 4
What conclusion did Rutherford draw about the position and characteristics of the atom’s positively charged part based on the few alpha particles that bounced back or were deflected at large angles in the gold foil experiment?
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  • The positive charge is not spread out; it is concentrated in a very small central region — the nucleus .
  • The nucleus is tiny, dense and carries almost all the mass and all the positive charge .
  • Only a hard, heavy, concentrated charge could make α-particles bounce straight back.
The Bounce-back Conclusion Positive charge is concentrated Nucleus is tiny and dense It holds most of the mass
Back to: A. Rutherford’s model of an atom
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