the periodic table

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Across
  1. 4. made up of atoms, must have a mass, must take up space
  2. 6. how closely spaced atoms are
  3. 8. no charge
  4. 9. negatively charged particles
  5. 10. electrons number of electrons in the outermost shell
  6. 13. a substance made of 2 or more elements chemically combined
  7. 15. mixtures all the particles look the same
  8. 16. is the ability of a substance to be pulled into a wire
  9. 18. is the ability of a substance to be rolled or pounded into thin sheets
  10. 20. refers to only liquids and gases and means how fast or slow it flows
Down
  1. 1. rule atoms will always react when they have a full shell
  2. 2. positively charged particles
  3. 3. pure substance that cannot be broken down into something simpler by chemical means
  4. 5. composed of 2 or more compounds, physically combined
  5. 7. mixtures the particles can't be seen because they look diffrent
  6. 11. the basic unit of all matter
  7. 12. changes describes matters ability to change into a new matter with different properties and a new identity. 2 or more substances are changed into a new substance.
  8. 14. combine liquids to form a solid
  9. 17. noble gases do not react, column 8
  10. 19. electrically charged element formed from the movement of electrons