Science!

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Across
  1. 5. carefully looking at something
  2. 6. something with a definite shape
  3. 8. something that acts like a liquid and a solid
  4. 10. anything that takes up space and has weight
  5. 11. an animal with scales as its body covering
  6. 13. an animal with a backbone
Down
  1. 1. something with very loosely packed molecules
  2. 2. an example of an amphibian
  3. 3. an animal that gives live birth and feeds its babies milk
  4. 4. something that takes the shape of its container
  5. 7. an living thing without a backbone
  6. 9. an animal with feathers as its body covering
  7. 12. a guess in science