Pure Substances and Mixtures

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Across
  1. 1. Matter where the particles are far apart. The particles can move in any direction because the attractive forces are weakest.
  2. 3. Solutions with a low concentration of solute.
  3. 4. The substances that dissolve (example: the salt in salt water; zinc in brass; oxygen, carbon dioxide, argon in air)
  4. 7. Matter where the particles are close together and locked into a pattern. They can move but only back and forth a little. Attractive forces hold the particles together.
  5. 9. A technique that separates particles from a mechanical mixture. Depending on the size of the particles being separated, the size of the mesh in the filter can be large, as in a screen, or very small, as in filter paper.
  6. 10. (Solution)A mixture that is the same throughout (solution); all samples taken from a homogeneous mixture will have the same properties. Examples: steel, salt water
  7. 11. any solid, liquid or gas that contains only one kind of particle throughout. Example in nature - diamonds; Example of processed pure substances - aluminum foil, table sugar.
  8. 14. A solution of gases including nitrogen, oxygen, argon, and carbon dioxide.
  9. 16. A solution in which all of the spaces between solvent particles are filled.
  10. 17. Anything that has mass and takes up space
  11. 18. Unprocessed material of any kind.
  12. 19. Solutions with a high amount of solute.
Down
  1. 2. The substance into which solutes dissolve (the water in salt water; copper in brass; nitrogen gas in air)
  2. 4. A solution that contains more of the solute than would be found in a saturated solution.
  3. 5. water vapour in the air.
  4. 6. Matter where the particles are slightly far apart. Because the particles are far apart the attractive forces are weaker and are able to slide past one another.
  5. 8. "rate of ___"Is faster when heated, when smaller solute particles are used; and when solution is stirred.
  6. 10. (Mechanical Mixture)An uneven mixture that contains 2 or more substances (mechanical mixture); samples of heterogeneous mixtures may have different properties. Examples: concrete, granola, pizza.
  7. 11. A theory used to explain matter and heat transfer. It suggests that all matter is made of tiny particles too small to be seen. The particles are constantly in motion because they have energy. The more energy they have, the faster they move.
  8. 12. Any solution that has unfilled spaces between the solvent particles.
  9. 13. The amount of solute dissolved in a given quantity of solvent or solution.
  10. 15. Any substance that contains at least 2 pure substances. Mixtures can be any combination of gases, liquids, or solids. Example soft drink is a mixture of solid (sugar), gas (carbon dioxide) and liquid (water).