1) Which of the following are in the nucleus of an atom? a) protons and electrons b) protons and neutrons c) neutrons and electrons 2) Which of the following statements is correct? a) Protons have a positive charge and neutrons are negative b) Protons have a negative charge and electrons are positive c) Protons have a positive charge and electrons are negative 3) What is the atomic number of an atom? a) The number of atoms it contains b) The number of protons it contains c) The number of neutrons it contains 4) In an atom: a) number of protons = number of electrons b) number of protons = number of neutrons c) Number of neutrons = number of electrons 5) A neutron has what charge? a) no charge b) positive c) negative 6) What is the mass of an electron? a) 1 b) -1 c) 0 7) What is the charge on an electron? a) +1 b) -1 c) 0 8) What is the mass on a neutron? a) 1 b) -1 c) 0 9) What is the charge on a neutron? a) +1 b) -1 c) 0 10) What is the mass of a proton? a) 1 b) -1 c) 0 11) What is the charge on a proton? a) +1 b) -1 c) 0 12) What is an isotope? a) same number of protons, different number of electrons b) same number of protons, different number of neutrons c) same number of neutrons, different number of protons 13) What is an ion? a) a charged atom b) something to flatten creases from a shirt c) an animal found in central parts of Africa 14) An atom gains an electron and becomes an ion. What charge does it now have? a) positive b) negative c) no charge 15) An atom loses an electron and becomes an ion. What charge does it now have? a) positive b) negative c) no charge 16) Which particles are not in the nucleus? a) protons b) neutrons c) electrons

Atomic structure quiz (chem 3)

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