Physical Science Final Exam

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Across
  1. 2. molecules move freely with no definite shape or volume
  2. 3. Empirical method of acquiring knowledge that has characterized the development of science. Has 7 steps in this METHOD.
  3. 5. facts and statistics collected together for reference or analysis
  4. 8. an element, feature, or factor that is liable to vary or change
  5. 11. name given to an element
  6. 12. molecules can flow easily with definite volume, but take shape of the container
  7. 16. negative charge, found in "electron cloud" outside nucleus
  8. 17. liquid to solid
  9. 19. neutral charge, found inside nucleus
Down
  1. 1. Used to find the pH value in different acids/bases.
  2. 4. a proposition made as a basis for reasoning, without any assumption of its truth. Also known as a "Prediction"
  3. 6. Substances which react with acids. pH value 7>
  4. 7. Something that does not change throughout the experiment.
  5. 9. Chemical substances that neutralizes alkalis, dissolves some metals. pH value >7
  6. 10. molecules vibrate but have a fixed position with definite volume and shape
  7. 11. Equal to the number of protons
  8. 13. positive charge, found in nucleus
  9. 14. solid to liquid
  10. 15. he symbol most often used for this is ρ. Mass/volume
  11. 18. substances that are made of one kind of matter