science

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Across
  1. 3. in a atom there is electron and ______
  2. 8. a type of energy generated by water
  3. 9. sugar=water,_____
  4. 10. the SI unit of force
  5. 11. a force that opposes motion
  6. 12. h2o
Down
  1. 1. mass x density
  2. 2. when a metal comes into contact with oxygen and water vapour
  3. 4. air=c02,
  4. 5. a common metal in the periodic table
  5. 6. a force that pulls 2 objects to one another
  6. 7. atom^2