My Chemistry Puzzle

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Across
  1. 2. a reaction in which two or more substances combine to form a new compound
  2. 6. an element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution
  3. 8. the state of matter in which the volume and shape of a substance are fixed
  4. 9. a structural formula in which electrons are represented by dots; dot pairs or dashes between two atomic symbols represent pairs in covalent bonds
  5. 15. one of the elements of Group 18 of the periodic table (helium, neon, argon, krypton, xenon, and radon); unreactive
  6. 16. a prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement
  7. 17. an arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column, or group
  8. 19. a chemical formula that shows the composition of a compound in terms of the relative numbers and kinds of atoms in the simplest ratio
  9. 22. The law that states the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
  10. 24. one of the elements of Group 17 of the periodic table (fluorine, chlorine, bromine, iodine, and astatine); it combines with most metals to form salts
  11. 26. the substance that is not used up completely in a reaction
  12. 27. the substance that controls the quantity of product that can form in a chemical reaction
  13. 29. a measure of the ability of an atom in a chemical compound to attract electrons
  14. 30. the number of electrons that must be added to or removed from an atom in a combined state to convert the atom into the elemental form
Down
  1. 1. the mass in grams of 1 mol of a substance
  2. 3. a reaction in which one element or radical takes the place of another element or radical in a compound
  3. 4. an ion made of two or more atoms
  4. 5. a chemical formula that shows the number and kinds of atoms in a molecule, but not the arrangement of the atoms
  5. 7. the maximum amount of product that can be produced from a given amount of reactant
  6. 10. the oxidation reaction of an organic compound, in which energy as heat is released
  7. 11. a reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
  8. 12. a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
  9. 13. the percentage by mass of each element in a compound
  10. 14. an element that is shiny and that conducts heat and electricity well
  11. 18. the attractive force that holds atoms or ions together
  12. 20. the attractive force that holds atoms or ions together
  13. 21. a reaction in which a single compound breaks down to form two or more simpler substances
  14. 23. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  15. 25. the condition of an atom expressed by the number of electrons that the atom needs to reach its elemental form
  16. 28. a region in an atom where there is a high probability of finding electrons