What is the charge of an electron?, positive, neutral, positive, negative, Which statement describes a concept included in the wave-mechanical model of the atom?, Protons, neutrons, and electrons are located in the nucleus., Electrons orbit the nucleus in shells at fixed distances, Atoms are hard, indivisible spheres., Electrons are located in regions called orbitals, What subatomic particles are found in the nucleus?, protons and electrons, protons and nucleons, protons and neutrons, According to the electron-cloud model of the atom, an orbital is a, circular path traveled by an electron around the nucleus, spiral path traveled by an electron toward the nucleus, region of the most probable proton location, region of the most probable electron location, What can be determined if only the atomic number of an atom is known?, the total number of neutrons in the atom, only, the total number of protons in the atom, only, the total number of protons and the total number of neutrons in the atom, the total number of protons and the total number of electrons in the atom, Which particle has a mass that is approximately the same as the mass of a proton?, electron, neucleon, neutron, An atom is electrically neutral because the, number of protons equals the number of electrons, number of protons equals the number of neutrons, ratio of the number of neutrons to the number of electrons is 1:1, ratio of the number of neutrons to the number of protons is 2:1, Which two particles make up most of the mass of an atom?, electron and neutron, electron and proton, proton and neutron, proton and positron, Experimental evidence indicates that the nucleus of an atom, has a negative charge, contains most of the mass of the atom, has no charge, contains a small percentage of the mass of the atom, Compared to the entire atom, the nucleus of the atom is, larger and contains little of the atom's mass, smaller and contains little of the atom's mass, smaller and contains most of the atom's mass, larger and contains most of the atom's mass, Which particle has the least mass?, a neutron, a proton, an electron, a neucleon, Which of the following statements best describes an electron?, It has a smaller mass than a proton and a positive charge., It has a greater mass than a proton and a positive charge., It has a greater mass than a proton and a negative charge, It has a smaller mass than a proton and a negative charge., What particle is electrically neutral?, a neutron, a neucleon, a proton, an electron, Which two particles have approximately the same mass?, neutron and electron, neutron and deuteron, proton and electron, proton and neutron

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