1) What is the centre of the atom called? a) Shell b) Cell c) Nucleus d) Nucleon 2) What is the relative charge of an electron? a) 0 b) -1 c) +1 d) -2 3) What is the relative mass of a neutron? a) 1 b) 0 c) 2 d) 4 4) What name is given to particles found inside an atom? a) Nucleons b) Sub-atomic particles c) Electrons d) atomos 5) What is the average diameter of an atom? a) 1nm b) 0.01nm c) 1x10-7m d) 1x10-10m 6) What is most of the atom made up of? a) Air b) Oxygen c) Empty Space d) Positive Charge 7) What radiation did Rutherford use in his gold foil experiment? a) Alpha b) Beta c) Gamma d) X-rays 8) What did Rutherford use to detect the radiation? a) Gamma Camera b) Photographic Paper c) Fluorescent Screen d) Geiger Counter 9) How did Niels Bohr arrange the electrons? a) In rings b) In planetary orbitals c) In fixed energy shells d) In the nucleus 10) Where would you find electrons with the lowest energy? a) In the shell closest to the nucleus b) Inside the nucleus c) In the outer most shell d) In the smallest ring

Emerging - The Atom

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