Periodic Table Crossword

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Across
  1. 4. Vertical rows on the periodic table
  2. 9. A substance that is made up of atoms that are alike
  3. 10. Model showing neutrons, protons, and electrons
  4. 11. Bond between metal and nonmetal
  5. 13. Element whose properties are between metals and solid nonmetals
  6. 14. The positively charged center of an atom
  7. 17. The smallest particle of an element that retains the element's properties
  8. 19. Atoms of the same element that have different numbers of nuetrons
Down
  1. 1. Group 17 on the periodic table
  2. 2. Heterogenous mixture of which the particles will never settle
  3. 3. A subatomic particle with a neutral charge
  4. 5. Bond between nonmetals
  5. 6. Horizontal rows on the periodic table
  6. 7. An element or substance that is not a metal
  7. 8. A subatomic particle with a positive charge
  8. 12. Matter composed of two or more substances that can be separated by physical means
  9. 15. A subatomic particle with a negative charge
  10. 16. Two or more elements chemically combined with a fixed proportion
  11. 18. A solid material that is hard, shiny, malleable, and ductile, with good electrical conductivity
  12. 19. An atom with a charge