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1) The ability to do work. a) neutron b) anion c) electron d) energy 2) negatively charged subatomic particle moving outside the nucleus of all atoms; exhibit properties of both particles and waves. a) neutron b) energy level c) electron d) proton 3) the center of an atom, made of protons and neutrons. a) nucleus b) anion c) electron d) proton 4) smallest particle of an element that still has the properties of that element. a) orbit b) electron c) nucleus d) atom 5) The lowest energy state of an electron. a) Photon b) Ground state c) Quantum d) Hertz 6) A discrete quantity of energy that can either be lost or gained by an electron. a) Photon b) Energy c) Hertz d) Quantum 7) A particle of electromagnetic radiation (light) that has zero mass and carries a quantum of energy. a) Energy b) Hertz c) Quantum d) Photon 8) Negatively charged subatomic particle moving outside the nucleus of all atoms; exhibit properties of both particles and waves. a) proton b) neutron c) electron d) photon 9) The identity of a chemical element is determined by which of the following? a) The number of protons it possesses b) The number of neutrons it possesses c) The number of electrons it possesses d) The sum of the number of protons and neutrons it possesses 10) A state of an electron in which its potential energy is higher than the ground (lowest possible) state. a) Energetic b) Photon c) A state of an electron in which its potential energy is higher than the ground (lowest possible) state. d) Electromagnetic radiation 11) Waves that carry energy through matter or empty space as vibrating electric and magnetic fields. a) Force b) electromagnetic radiation c) Kinetic energy d) Orbits 12) a way of accurately representing the experimental evidence about atoms in the simplest way possible. a) energy level b) electron configuration c) atomic model d) orbital 13) the three-dimensional region of space that indicates where there is a high probability of finding an electron. a) Cobalt b) electron c) nucleus d) orbitals 14) measure of the space occupied by a sample of matter. a) distance b) volume c) orbital d) electronic configuration 15) electrons in the highest occupied principal energy level of an atom (furthest from the nucleus) a) energized electrons b) simple electrons c) valence electrons d) electron configuration

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