Unit 1: Intro to Chemistry

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Across
  1. 2. a proposed explanation for observations and laws
  2. 4. the science that seeks to understand the behavior of matter by studying what atoms and molecules do
  3. 6. the non-place-holding digits in a reported measurement; they represent the precision of a measured quantity
  4. 8. one part of a number expressed in scientific notation
  5. 9. a measure of the quantity of matter within an object.
  6. 10. a unit of volume equal to 1.057 quarts
  7. 13. a law stating that in a chemical reaction, matter is neither created nor destroyed
  8. 15. a theory stating that all matter is composed of tiny particles called atoms
  9. 17. previously agreed-on quantities used to report experimental measurements
  10. 19. a fundamental property of materials that relates mass and volume and differs from one substance to another
  11. 21. often the first step in the scientific method; must measure or describe something about the physical world
  12. 24. one part of a number expressed in scientific notation
  13. 25. the way that scientists learn about the natural world
  14. 28. a system used to write very big or very small numbers, often containing many zeros, more compactly and precisely
  15. 29. the unit system commonly used throughout most of the world
Down
  1. 1. a measure of space
  2. 3. a theory or law before it has become well established
  3. 5. the SI standard unit of length
  4. 7. the standard set of units for science measurements, based on the metric system
  5. 11. a visual outline of the solution to a problem
  6. 12. the most convenient system of units for science measurement, based on the metric system
  7. 14. the SI standard unit of time
  8. 16. a unit system commonly used in the United States
  9. 18. a statement that summarizes past observations and predicts future ones
  10. 20. a number that represents the number of times a term is multiplied by itself
  11. 22. prefixes used by the SI system with the standard units
  12. 23. the SI standard unit of mass
  13. 26. a procedure that attempts to measure observable predictions to test a theory or law
  14. 27. a factor used to convert between two separate units