Density and Pressure

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Across
  1. 2. A state of matter with a definite volume but no fixed shape (6 letters).
  2. 5. The force exerted by the weight of the air above us (20 letters).
  3. 6. A condition where force is spread out over a large area (11 letters).
  4. 8. The unit of force named after a famous scientist (6 letters).
  5. 10. The measure of mass per unit volume (7 letters).
  6. 11. A state of matter with no fixed shape or volume (3 letters).
  7. 12. The amount of space an object occupies.
  8. 13. Small, fast-moving entities in a gaseous state (12 letters).
  9. 15. The measure of how hot or cold something is (11 letters).
  10. 17. The force applied per unit area (8 letters).
Down
  1. 1. A condition where force is applied over a small area (12 letters).
  2. 3. A push or pull that causes an object to move or change (5 letters).
  3. 4. The amount of matter in an object.
  4. 7. A method to measure the volume of an irregular object using a liquid (17 letters).
  5. 9. A state of matter with a definite shape and volume (5 letters).
  6. 14. The size of a surface, measured in square units (4 letters).
  7. 16. A unit of pressure equal to one newton per square meter (6 letters).