Science Crossword Puzzle

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Across
  1. 1. Invisible but ever present, this state of matter fills the air we breathe
  2. 3. Name of element symbol of Au
  3. 5. Transforming used materials into new products to minimize waste
  4. 7. This is produced in yeast during anaerobic respiration
  5. 8. Name of element symbol of Cu
  6. 9. A chemical reaction that requires heat
  7. 11. Discovered the nucleus through gold foil experiment
  8. 12. The charged particles that result from an atom’s electron exchange
  9. 15. Negatively charged particle in an atom
  10. 17. Large ocean wave caused by an earthquake
  11. 18. Path of planets moving around the sun
  12. 19. Gradual decomposition of iron, due to oxidation or chemical reaction and usually be seen with red-orange color
Down
  1. 1. Sugar made by plant during photosynthesis
  2. 2. A push or pull on an object
  3. 4. When liquid turns to gas under the sun’s warm embrace
  4. 6. The measure or rate of change in velocity
  5. 10. Ice, rock, or a sturdy table- what’s unyielding in its shape?
  6. 13. Bending of waves due to change in speed
  7. 14. This apparatus can hold large amounts of liquids, but don’t mistake it for a coffee mug
  8. 16. Released gas as the product of photosynthesis reaction on plants