Atoms and Molecules

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Across
  1. 2. number, number of protons in an element
  2. 5. a chemical made up of only one kind of atom
  3. 6. a grouping together of separate things
  4. 8. state of matter with no definite shape or volume
  5. 11. state of matter with a definite shape and volume
Down
  1. 1. a quality of something like strength, stretchiness or absorbency
  2. 3. two or more atoms joined (or “bonded”) tightly together
  3. 4. the amount of mass per volume
  4. 7. the amount of matter in an object
  5. 9. the basic unit of a chemical element
  6. 10. state of matter that takes the shape of its container