Dorothy's Crossword

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Across
  1. 1. Smallest particle of an element.
  2. 4. Anything that takes up space and has mass
  3. 5. Outer part of the Earth
  4. 10. physical characteristics of an object
  5. 11. Layer of gas surrounding Earth
  6. 12. form of matter with consistent properties
  7. 14. how much matter in an object
  8. 15. pure substances made up of one type of atom
Down
  1. 2. 2 or more substances combined that's easy to separate
  2. 3. Table of Elements Table where elements are listed
  3. 6. All the water on Earth
  4. 7. Composition Made from the same substance or combination throughout.
  5. 8. Amount of space an object takes up
  6. 9. All living things
  7. 13. 2 or more elements combined