Chain Crosswords Short Science Easy — Set 10

Easy 11×11 Set 10
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7
Across
  1. 2. Amount of matter in an object
  2. 3. Iron oxide formed by corrosion
  3. 4. Oscillation that carries energy
  4. 5. Underwater ridge of coral
  5. 6. Natural satellite of Earth
  6. 7. Substance with pH below seven
Down
  1. 1. A word related to science
  2. 3. A word related to science