Laboratory Safety & Measurement

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Across
  1. 2. A quantitative observation measured against a standard unit
  2. 6. The SI unit for mass on a smaller scale more frequently used in chemistry (the SI unit divided by 1000)
  3. 7. Short for Personal Protective Equipment. External garments worn as a last resort to preventing chemical exposure.
  4. 8. An SI derived unit frequently used in chemistry that measures volume. Equal to 1 cubic centimeter.
  5. 10. An estimated degree of error within a measurement. Expressed through use of significant figures.
  6. 12. A highly precise version of a balance that measures mass down to micrograms
  7. 13. The SI unit for temperature
  8. 15. Unexpected, unpredictable error that occurs in an experiment. Balances out as the sample size grows. Reduces precision.
  9. 16. A separation method used for homogenous solutions that relies on differences in boiling point between the solvent and solute
  10. 18. A highly precise type of flask that measures a single volume. Typically used to make solutions to precise concentrations.
  11. 22. Error that consistently skews the data in one specific direction, often due to equipment or measurement issues. Reduces accuracy.
  12. 25. How we understand the size or quantity of something with respect to other materials. A ratio that can represent proportionality of materials.
  13. 26. Data observations that involve a numeric amount
  14. 28. A flat-bottomed, wide-mouthed piece of glassware typically used as a reaction vessel
  15. 29. The most commonly used type of flask that features a flat bottom, narrow neck, and narrow opening
  16. 31. A separation technique used for homogenous mixtures in which a solution is inserted into a stationary phase while a mobile phase separates the mixture based on solubility differences
  17. 32. Used to control the temperature of an experiment
  18. 33. A purification method that changes the crystal structure of a solid by slowly freezing it in a way that allows particles to align in a highly organized manner
  19. 34. The metric prefix for 10^-12
  20. 35. The variable that changes in response to changes in its environment
Down
  1. 1. A proportional expression that shows how far off a measured value is from a known value
  2. 3. A group receiving the applied treatment in which the independent variable is changed
  3. 4. Data observations related to the appearance or characteristics of something
  4. 5. A separation method often used for heterogeneous mixtures that uses a porous medium to trap larger particles.
  5. 9. The type of graph used for fully quantitative data. Features a series of (x,y) coordinates with a line of best fit to represent the general data trend
  6. 11. The metric prefix for 10^-9, often used to express wavelength.
  7. 14. An expression of solution concentration calculated by dividing the number of moles of a substance by the total volume of the solution
  8. 17. A type of graph that can represent either qualitative or quantitative data in which measurements are represented as parts of a whole (percentages)
  9. 19. The type of value that has an unlimited number of significant figures. Includes conversion factors and constants.
  10. 20. A small tool featuring a long tube with a squeezable bulb at the top used to transfer small volumes of liquid from one container to another
  11. 21. A factual piece of information gathered using one of your five senses
  12. 23. A measure of how close an experimentally measured value is to the known or true value
  13. 24. An experimental variable that is purposefully changed to influence the results
  14. 27. A measure of how close experimentally measured values are to one another
  15. 30. The variable or group that is purposefully kept the same to limit the number of variables tested at once