Chemistry Vocabulary

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Across
  1. 6. an element that is dull, brittle, and unreactive
  2. 7. a substance made up of only one kind of atom
  3. 9. the result of a chemical reaction
  4. 11. an element that is shiny, malleable, conductive, and reactive
  5. 15. something that expels more heat than it takes in
  6. 16. the part of the atom with a positive charge
  7. 18. the chemist who formulated the Periodic Table
  8. 20. a substance that changes during a chemical reaction
  9. 21. an element that has properties of both a metal and a nonmetal
  10. 22. the part of the atom with a neutral charge
  11. 23. the central part of the atom
  12. 24. the letter or two letters that stand for an element
Down
  1. 1. the path that electron take around the nucleus
  2. 2. the electron(s) in the outermost shell around the nucleus
  3. 3. states that matter can’t be created or destroyed
  4. 4. a substance made up of more than one atom
  5. 5. the number of protons in the nucleus of an atom
  6. 8. a substance made up of two or more elements
  7. 10. the number of protons and neutrons in an atoms
  8. 12. the smallest part of matter
  9. 13. one vertical column on the periodic table
  10. 14. the gases with the full number of valence electrons
  11. 15. the part of the atom with a negative charge
  12. 17. one horizontal row on the periodic table
  13. 19. something that takes in more heat than it expels