1) An isotope has a different number of  a) protons b) electrons c) neutrons 2) An atom where the number of electrons is NOT the same as the number of protons is an a) ion b) iostope c) element 3) If an atom loses a proton it becomes a) a new element b) an isotope c) boring 4) The atomic mass number is the number of ............... in the atom a) Protons b) Neutrons c) Electrons d) Protons and Neutrons 5) The atomic number is the number of ............... in the atom a) Protons b) Neutrons c) Electrons d) Protons and Neutrons 6) After alpha decay has occured, an atom has a) lost 2 protons b) lost 2 electrons c) gained 2 protons d) gained 2 electrons

Isotopes, ions and elements

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