Pick the correct combination for the charges of sub-atomic particles.
  • Proton +ve Neutron 0 Electron -ve
  • Proton 0 Neutron +ve Electron -ve
  • Proton +ve Neutron -ve Electron 0
  • Proton 0 Neutron 0 Electron -ve
The numbers in the options below represent the masses of the three sub-atomic particles. Pick the correct combination.
  • Proton 1 Neutron 0 Electron 1
  • Proton 0 Neutron 1 Electron 1
  • Proton 1 Neutron 1 Electron 0
  • Proton 1 Neutron 1 Electron 1
The mass number of an element tells us...
  • the number of protons in the nucleus
  • the number of protons plus electrons
  • the number of neutrons plus electrons
  • the number of neutrons plus protons
The atomic number of an element tells us...
  • the number of neutrons in the nucleus
  • the number of electrons orbiting the nucleus
  • the number of protons orbiting the nucleus
  • the number of electrons in the nucleus
The atomic number of an element is 11 and its mass number isPick the correct combination of protons, neutrons and electrons.
  • p=12, n=12, e=11
  • p=11, n=11, e=12
  • p=12, n=11, e=11
  • p=11, n=12, e=11
The protons of an atom are found...
  • in the nucleus of the atom
  • in orbit around the outside of the nucleus
  • dotted throughout the atom
  • in lines radiating out from the nucleus
The electrons are found...
  • in the nucleus of the atom
  • in orbit around the outside of the nucleus
  • dotted throughout the atom
  • in lines radiating out from the nucleus
The neutrons of an atom are found...
  • in the nucleus of the atom
  • in orbit around the outside of the nucleus
  • dotted throughout the atom
  • in lines radiating out from the nucleus
Carbon has two isotopes. These atoms have...
  • The same number of protons, but different numbers of electrons
  • The same number of electrons, but different numbers of protons
  • The same number of protons, but different numbers of neutrons
  • The same number of neutrons, but different numbers of electrons
If an element has 56 protons, 56 electrons and 81 neutrons, what is its mass number?
  • 56
  • 81
  • 137
  • 112
0 h : 0 m : 1 s

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