lab equipment.

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Across
  1. 4. is composed of 2 words, we hang a claw or a nut on it
  2. 7. is composed of 2 words, we put the powder in it to weigh it
  3. 9. is composed of 2 words, it is used to weigh
  4. 11. we hang on to the glassware to pass the water
Down
  1. 1. it's composed of 2 words, it's the glassware used to make a filtration
  2. 2. he sucks the liquid into the pipette
  3. 3. is composed of 2 words, we observe through it in an enlarged way
  4. 5. it's for protect the eyes
  5. 6. is composed of 3 words, we hold the test tubes there when it's hot
  6. 8. it's for protect the hands
  7. 10. is composed of 3 words, it's to clean our hands or glassware