Properties of Matter, Unit 2

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Across
  1. 2. A high-energy state of matter consisting of ions and free electrons.
  2. 6. A change that alters the form or appearance of a substance without changing its composition.
  3. 8. A mixture in which the composition is not uniform throughout.
  4. 9. A separation technique that results in the formation of pure solid particles from a solution.
  5. 10. A process that separates solids from liquids using a porous barrier.
  6. 11. A mixture that has a uniform composition throughout; also called a solution.
  7. 15. The change of a substance directly from a solid to a gas without passing through the liquid state.
  8. 18. A process that separates substances based on differences in boiling points.
  9. 20. A process s in which one or more substances are converted into new substances with different properties.
  10. 21. A property that depends on the amount of matter present, such as mass or volume.
Down
  1. 1. The gaseous form of a substance that is normally a liquid or solid at room temperature.
  2. 3. The law of _____ proportions states that when two elements form more than one compound, the masses of one element combine with a fixed mass of the other in ratios of small whole numbers.
  3. 4. The law of ____ proportions states that a given compound always contains the same elements in the same proportions by mass.
  4. 5. A state of matter with neither definite shape nor volume; particles move freely and spread out.
  5. 6. A physically distinctive form of matter such as solid, liquid, gas, or plasma.
  6. 7. A state of matter with a definite shape and volume where particles are tightly packed.
  7. 9. A substance formed when two or more elements chemically combine in fixed proportions.
  8. 12. A physical blend of two or more substances that are not chemically combined.
  9. 13. Matter that has a uniform and definite composition; either an element or a compound.
  10. 14. A homogeneous mixture composed of two or more substances.
  11. 16. A state of matter with a definite volume but no definite shape; particles can move past one another.
  12. 17. A pure substance that cannot be broken down into simpler substances by chemical means.
  13. 19. A property that does not depend on the amount of matter present, such as density or color.