End of year Science Crossword

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Across
  1. 2. Known as the gas giant
  2. 5. seventh group on the periodic table
  3. 7. A solid that dissolves a liquid
  4. 8. Something with a pH more than 7
  5. 9. Famous scientist who published a nontechnical explanation of his work called "a Brief History of Time"
  6. 13. Groups of tissues working together
  7. 14. the control center of the cell
  8. 15. A measure of how hot or cold a substance is.
  9. 16. This contains two or more elements chemically combined.
  10. 19. The liquid that dissolves a solid
Down
  1. 1. 2nd planet from our sun
  2. 3. Name of most stable group of gases with a full outer shell, found in group 8 of the periodic table
  3. 4. The eighth and farthest-known Solar planet from the Sun
  4. 6. Space in a plant cell filled with watery sap
  5. 10. A vertical column of elements on the periodic table with similar properties.
  6. 11. Green coloured catalyst in a plant cell that converts light energy to chemical energy.
  7. 12. The most common solvent
  8. 17. Unit of force
  9. 18. The smallest particle of an element.