25 word crossword puzzle

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Across
  1. 2. A state of matter that has a definite shape and a definite volume
  2. 4. A change in state from a gas to a liquid
  3. 6. Anything that has mass and may takes up space
  4. 7. A neutral group of two or more atoms held together by covalent bonds
  5. 9. The change of state from a liquid to a gas
  6. 10. The temperature at which a liquid may freeze
  7. 14. The amount of space that matter occupies
  8. 15. A single kind of matter that is pure and may have a specific set of properties
  9. 16. A measure of how much matter is in an object
  10. 18. Something that has resistance to flowing
  11. 19. A substance made of two or more elements chemically combined in a specific ratio, or proportion
  12. 20. The basic particle from which all elements are made, the smallest particle of an element that has the properties of that element
  13. 21. The temperature at which a liquid may boil
  14. 23. The ability to do work or cause change
  15. 24. Something that has kinetic and potential energy of all the particles of an object
Down
  1. 1. Two or more substances that are together in the same place but their atoms are not chemically bonded
  2. 3. A measure of the force of gravity acting on an object
  3. 5. The result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together.
  4. 8. A state of matter that has no definite shape but has a definite volume
  5. 11. A characteristic of a pure substance that might be observed without changing it into smaller substance
  6. 12. A characteristic of a substance that describes its ability to change into different substances
  7. 13. A state of matter with no definite shape or volume
  8. 17. The state in which one object's distance from another is changing
  9. 22. The measurement of how much mass of a substance is contained in a given volume
  10. 23. A pure substance that cannot be broken down into other substances by chemicals or physical means