Science

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Across
  1. 3. Newton's first law of motion
  2. 4. are used to balance chemical equations
  3. 6. a force of attraction between two things that have mass
  4. 9. a very reactive gas
  5. 11. force that opposes motion
Down
  1. 1. a substance that increases the rate of a chemical reaction
  2. 2. a change in speed or direction of an object
  3. 5. push or pull acting on an object
  4. 7. metals are the elements in groups 3-12 in the periodic table
  5. 8. the SI unit for weight
  6. 10. gases that are nonreactive,nonmetallic and in group 18 of the periodic table