In the α\alphaα-particle scattering experiment, a beam of α\alphaα-particles is directed at a thin metal foil. The following two observations are made:
Which of the following options correctly identifies the conclusions about atomic structure derived from these observations?
Observation 1 leads to: The nucleus contains neutrons. Observation 2 leads to: Most of the atom is empty space.
Observation 1 leads to: Most of the atom is empty space. Observation 2 leads to: Most of the mass and positive charge of the atom are concentrated in a tiny, dense nucleus.
Observation 1 leads to: Most of the mass and positive charge of the atom are concentrated in a tiny, dense nucleus. Observation 2 leads to: Most of the atom is empty space.
Observation 1 leads to: Electrons orbit the nucleus in specific shells. Observation 2 leads to: The nucleus has a negative charge.
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.