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Across 1. a visual representation of the elements grouped by similar properties (2 Words) 4. the substances in a chemical reaction that are being changed into new substances 5. columns of elements on the period table that share similar physical and chemical properties 8. found in a small diagonal section of the periodic table, these elements have unique properties of metals and nonmetals 10. found on the left side of the periodic table, these elements have high luster, are usually solid, and conduct electricity 11. the number that precedes a chemical formula that indicates the number of molecules 12. a changein the temperature,state of matter, shape, density, or any other observable characteristic of a substance (2 Words) 15. a chemical equation that hasequal number and type of atoms on the reactant and product side of the equation (2 Words) 16. rows of elements on the period table 17. the amount of matter in a given space 18. a number written slightly smaller, below, and after an element’s symbol indicating the number of atoms in a compound 19. found onthe right side of the period table, these elements are poor conductors of electricity and are mostly gases

Down 1. the new substances produced from a chemical reaction and are written on the right side of the chemical equation 2. the principle that states the mass of the substances before a reaction is equal to the mass of the susbtances after the reaction (6 Words) 3. a set of symbols and numbers representing the number and type of elements in a compound (2 Words) 6. a number written preceding a chemical formula indicating the number of molecules 7. the process in which the physical and chemical properties of substances are changed when new substances are formed (2 Words) 9. the ability to be molded undercompressive stress 11. a change when a new substance is formed from the reaction between two or more different substances (2 Words) 13. the ability of an element to transfer heat or electricity through it 14. a physical property that describes how a substance reflects light