Fundamentals of Chemistry Crossword Puzzle

QUESTIONS LIST: radioactive decay : can burn and cause cancer, amu : atomic mass unit, ion : an atom or group of atoms that has a positive or negative electric charge, neutrons : a particle that has no electric charge and it is located in the atom's nucleus, protons : a positively charged particle located in an atom's nucleus, radioactivity : the process by which the nucleus of an atom of an element releases energy and particles, metalloid : an element that has properties of both metals and nonmetals, negative ion : a atom that has more electrons, electron cloud : tons positive and negative electrons surrounding the nucleus, period : a horizontal row in the periodic table of elements, isotope : an atom of one element that has a different number of neutrons than another atom of the same element, group : a vertical column in the periodic table of the elements, lanthanides : rare earth metals that are used for coating tv tubes, noble [inert] gases : elements that never react with other elements, alkali metal : a reactive group in the periodic table, electrons : an negatively charged particle located outside an atom's nucleus, atomic number : the number of protons in the nucleus of an atom, transition metal : are the earliest known elements, actinides : elements 90-103, nonmetal : an element that is not metal and has the opposite properties of metal, halogens : combine easily with many elements, metal : an element that tends to be shiny, easily shaped, and a good conductor of electricity and heat, positive ion : a atom that has fewer electrons, alkaline metals : less reactive metals, nucleus : the central region of atom where most of the atom's mass is found in protons and neutrons.