Science Time !!!

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Across
  1. 1. A unit of mass
  2. 4. We measure volume using a ____ cylinder
  3. 5. Something made up of the same kind of atoms is called an
Down
  1. 2. The force that opposes motion .It starts with an 'I'
  2. 3. The unit of force
  3. 6. ___ is the amount of matter in an object