Properties off matter. Declan

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Across
  1. 4. accompanied by or requiring the absorption of heat.
  2. 7. of high quality excellent.
  3. 9. accompanied by the release of heat.
  4. 13. a multiplier or factor that measures some property.
  5. 14. a multiplier or factor that measures some property.
  6. 16. a substance or matter in a state in which it will expand freely
  7. 17. a measure of how much mass is contained in a given unit of volume
Down
  1. 1. a part or aspect of something abstract, especially one that is essential or characteristic.
  2. 2. a substance that flows freely but is of constant volume
  3. 3. substance a form of matter with constant chemical composition and uniform, distinct properties throughout
  4. 5. occupies space and possesses rest mass, especially as distinct from energy
  5. 6. the mixing of two properties of matter
  6. 7. relating to, measuring, or measured by the quantity of something rather than its quality.
  7. 8. the act of perceiving reality
  8. 10. the ---- of matter is the rule that states matter is created
  9. 11. a thing that is composed of two or more separate elements; a mixture.
  10. 12. the fundamental, constant measure of the amount of matter
  11. 15. the natural agent that stimulates sight