1) What is the charge of a proton? a) -1 b) -0 c) +1 d) +2 2) Where are the electrons located in an atom? a) Electrons b) Electron shells c) Proton d) Neutron 3) Which sub-atomic particles has no charge? a) Neutron b) Proton c) Electron d) All of the above 4) The central part of the atom. a) Nucleus b) Electron c) Proton d) Neutron 5) It carries the positive charge. What sub-atomic partice is this? a) Electron b) Neutron c) Nucleus d) Proton 6) This sub-atomic particle has no charge a) Electron b) Neutron c) Nucleus d) Proton 7) Matter consists of small indivisible particles called atoms. Who is the proponent of this? a) Democritus b) John Dalton c) Joseph John Thomson d) Ernest Rutherford 8) Atoms are solid, indivisible spheres with unique weights. What is the name of this model? a) Democritus b) John Dalton c) Joseph John Thomson d) Ernest Rutherford 9) Who discovered the electrons? a) John Dalton b) Ernest Rutherford c) Joseph John Thomson d) Niels Bohr 10) Atom has dense positively charged central nucleus. This definition came from who's proponent? a) Democritus b) John Dalton c) Joseph John Thomson d) Ernest Rutherford

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