7th and 8th Grade Science Crossword #1

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Across
  1. 4. – Substance made of two or more elements chemically combined.
  2. 5. – Basic unit of life.
  3. 7. – A trait that helps an organism survive.
  4. 11. – Chart of all known elements.
  5. 15. – Matter with definite volume but no definite shape.
  6. 16. – Change in form but not in substance.
  7. 19. – Mass per unit of volume.
  8. 23. – Movement of particles from high to low concentration.
  9. 24. – Change that produces a new substance.
  10. 26. – Change in species over time.
  11. 28. – Structure made of DNA and proteins found in the nucleus.
Down
  1. 1. – All living and nonliving things in an area.
  2. 2. – A change in DNA.
  3. 3. – Study of organisms and their environment.
  4. 4. – Organelle in plants that performs photosynthesis.
  5. 6. – Positively charged particle in the nucleus.
  6. 8. – Gel-like material inside the cell.
  7. 9. – A section of DNA that codes for a trait.
  8. 10. – Control center of a cell.
  9. 12. – Substance made of one kind of atom.
  10. 13. – Combination of substances not chemically bonded.
  11. 14. – Molecule that carries genetic information.
  12. 17. – Matter with definite shape and volume.
  13. 18. – Organelle that makes energy for the cell.
  14. 20. – Space an object takes up.
  15. 21. – Two or more atoms bonded together.
  16. 22. – Matter with no definite shape or volume.
  17. 25. – Smallest unit of an element.
  18. 27. – Movement of water across a membrane.
  19. 29. – Amount of matter in an object.