physical science crossword

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Across
  1. 2. A metal made by combining two or more metallic elements.
  2. 4. A lens that curves outward, like the back of a spoon.
  3. 6. The substance in which a solute dissolves (like water).
  4. 9. A space entirely devoid of matter.
  5. 11. A complete path around which an electric current can flow.
  6. 14. A unit used to measure the intensity of a sound.
  7. 17. The force exerted on the mass of an object by gravity.
  8. 18. Atoms of the same element with different numbers of neutrons.
  9. 19. The action or process of moving or being moved.
  10. 20. The ability to do work or cause change.
Down
  1. 1. A substance made of two or more different elements.
  2. 3. The SI unit of force.
  3. 5. An ionized gas consisting of positive ions and free electrons.
  4. 7. The amount of space that an object or substance occupies.
  5. 8. The resistance that one surface encounters when moving over another.
  6. 10. A material that produces a magnetic field.
  7. 12. The tendency of an object to resist a change in motion.
  8. 13. A subatomic particle with a positive charge.
  9. 15. A state of matter with a definite volume but no fixed shape.
  10. 16. Mass per unit volume of a substance.