Physical science crossword puzzle by Milo

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Across
  1. 2. A substance made up of various types of particles that occupies physical space and has inertia.
  2. 7. The composition IS uniform throughout the mixture.
  3. 8. A state of matter that has no fixed shape and no fixed volume.
  4. 10. A state of matter that retains its shape and density when not confined.
  5. 11. A collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral.
  6. 13. A characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons.
  7. 14. The composition IS NOT uniform throughout the mixture
Down
  1. 1. A small, positively charged particle of matter found in the atoms of all elements
  2. 3. The smallest part of a substance that cannot be broken down chemically.
  3. 4. The smallest particle of a substance that has all of the physical and chemical properties of that substance.
  4. 5. Ability to do work, which is the ability to exert a force causing displacement of an object.
  5. 6. A dimensionless quantity representing the amount of matter in a particle or object.
  6. 9. A type of matter with specific properties that make it less rigid than a solid but more rigid than a gas.
  7. 12. The definite look of something