Introduction of matter

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Across
  1. 4. the amount of space that matter occupies
  2. 5. properties charities that can be observed without changing the mater into a type another of matter
  3. 6. substance that are made up for only type of atom
  4. 8. the basic unit from which matter is made
  5. 9. is made up of two or more substances together in the same place
  6. 10. a measure of the force of gravity on an object
Down
  1. 1. a group of two atoms or more held together by chemical bond
  2. 2. made of two or more elements that chemically combined in set radio
  3. 3. a single kind matter that always is specific makeup or composition
  4. 7. that amount of matter in an object
  5. 9. scientific word of stuff or anything that has mass takes up space