End of Year Science Crossword

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Across
  1. 3. Pure substance consisting of only one type of atom.
  2. 6. Basic unit of life.
  3. 7. Substance made of two or more elements chemically combined.
  4. 10. Device used to measure temperature.
  5. 11. The center of an atom containing protons and nuetrons
  6. 12. State of matter with no definite shape or volume.
  7. 13. Tiny infectious agent that can only replicate inside living cells.
Down
  1. 1. Type of energy from sources like the sun and wind.
  2. 2. Unit of force named after a famous English scientist.
  3. 4. State of matter with a definite shape and volume.
  4. 5. Variety of different types of life in an ecosystem.
  5. 8. Process by which plants make food using sunlight.
  6. 9. Body's ability to resist infections and diseases.