Mastery Quiz (See related pages) 1 The fundamental constituents of the nucleus are A) protons and electrons B) neutrons and electrons C) protons only D) neutrons only E) protons and neutrons 2 Protons have a mass A) equal to the mass of the electron B) 1835 times smaller than the mass of the electron C) 1835 times larger than the mass of the electron 3 Different isotopes have A) the same number of protons in the nucleus B) the same number of neutrons in the nucleus C) the same number of electrons in the nucleus D) the same mass number 4 The chemical properties of an element are determined by the A) number of protons in the nucleus B) number of neutrons in the nucleus C) number of electrons in the nucleus 5 If you originally had 1000 atoms, after one half-life atoms would remain. 6 The nuclear reaction in which small nuclei are combined to form larger nuclei is nuclear . 7 Deuterium is an isotope of hydrogen that has (how many?) neutrons. 8 Control rods are used in nuclear reactors A) to produce more neutrons B) to add more fuel C) to produce more protons D) to absorb neutrons 9 The isotope of uranium that is used as fuel in nuclear reactors is A) U238 B) U235 C) U236
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