Scientific Reading

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Across
  1. 4. The process of making or creating something new.
  2. 5. A measure of how hot or cold something is.
  3. 7. Turning used materials into new products.
  4. 9. protein that speeds up chemical reactions in living things.
  5. 10. Able to be maintained long-term without harming the planet.
  6. 11. degradation The process of breaking plastic down into smaller, simpler molecules.
  7. 12. A group of atoms bonded together; the smallest unit of a chemical substance.
  8. 14. Decayed organic material used as fertilizer.
  9. 15. system A system where materials are reused over and over without becoming waste.
Down
  1. 1. The process of separating something into smaller parts.
  2. 2. Everything around us: air, water, soil, plants, animals, and humans.
  3. 3. molecules Clean, separated molecules with no contamination.
  4. 6. Able to work well even at high temperatures without breaking down.
  5. 8. Materials that are thrown away because they are no longer needed.
  6. 13. reaction A process where substances change into new substances.