Physical Science Crossword

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QUESTIONS LIST: ATOMIC MASS UNIT: a unit of mass that describes the mass of an atom or molecule, NUCLEUS: at atom's central region, made up of protons and neutrons, ELECTRON: a subatomic particle with a negative charge, MASS NUMBER: the sum of the numbers of protons and neutrons in an atom, VALENCE ELECTRON: an electron found in the outermost shell of an atom. Determines chemical properties, PHOTON: a light particle, ISOTOPE: an atom that has the same number of protons, but a different number of neutrons, as other atoms of the same element, PROTON: a subatomic particle that has a positive charge. Located in the nucleus., ORBITAL: a region in an atom with a high probability of finding electrons, NEUTRON: a subatomic particle that has no charge. Located in the nucleus., MOLE: the SI base unit used to measure the amount of a substance, ATOMIC NUMBER: an identifying number of an element equal to the number of protons in a single atom