science crossword puzzle

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Across
  1. 1. the smallest building block of matter
  2. 4. two or more atoms joined together
  3. 6. the amount of space an object takes up
  4. 9. a measurement of how hot or how cold something is
  5. 10. a state of matter that has a defined shape and volume
  6. 11. a state of matter that takes the shape of its container
  7. 12. a state of matter that has no shape or volume
Down
  1. 2. anything that has mass and takes up space
  2. 3. a pure substance made up of only one kind of atom
  3. 5. characteristics that describe matter
  4. 7. a substance made of two or more different elements bonded together
  5. 8. the amount of matter