Chapter 3 and 4 Vocabulary

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Across
  1. 3. the value measured in the lab
  2. 4. the zero point on the Kelvin scale, 0 K is equal to -273.15 C
  3. 6. the quantity of heat that raises the temperature of 1g of pure water by 1C
  4. 8. the ratio of the mass of an object to its volume (density = mass / volume)
  5. 11. the difference between the experimental value and the accepted value (error = experimental value - accepted value)
  6. 13. the correct value for the measurement based on reliable references
  7. 16. a force that measures the pull on a given mass by gravity
  8. 18. SI unit of energy
  9. 20. a quantity that has both a number and a unit.
  10. 21. the freezing point of water is 273.15 kelvins (K), and the boiling point is 373.15 K
  11. 22. sets the freezing point of water at 0 C and the boiling point of water at 100 C
  12. 26. a glowing beam
  13. 27. a measure of how hot or cold an object is
  14. 29. (kg) the mass of an object is measured in comparison to a standard mass of 1 kg
  15. 30. negatively charged subatomic particles
  16. 32. subatomic particles with no charge but with a mass nearly equal to that of a proton
  17. 33. the tiny central core of an atom and is composed of protons and neutrons
  18. 34. atoms that have the same number of protons but different numbers of neutrons
  19. 35. of an element is a weighted average mass of the atoms in a naturally occurring sample of the element
  20. 36. the total number of protons and neutrons in an atom
Down
  1. 1. the law of conservation mass and law of constant composition
  2. 2. a measurement is the absolute value of the error divided by the accepted value multiplied by 100% (percent error = |error| / accepted value x 100%)
  3. 5. a measurement includes all of the digits that are known, plus a last digit that is estimated.
  4. 7. a measure of how close a measurement comes to the actual or true value of whatever is measured. ‘
  5. 9. (SI) a revised version of the metric system
  6. 10. a way to analyze and solve problems using the units, or dimensions, of the measurements
  7. 12. a given number is written as the product of two numbers: a coefficient and 10 raised to a power.
  8. 14. defined as one twelfth of the mass of a carbon- 12 atom
  9. 15. a ratio of equivalent measurements
  10. 17. (m) the basic unit of length or linear measure
  11. 19. the number of protons in the nucleus of an atom of that element
  12. 23. (l) the volume of a cube that is 10 along each edge
  13. 24. positively charged subatomic particles
  14. 25. the capacity to do work or to produce heat
  15. 28. a measure of how close a series of measurements are to one another, irrespective of the actual value.
  16. 31. (g) 1/1000 of a kilogram; the mass of 1 cm of water at 4C is 1g
  17. 35. the smallest particle of an element that retains its identity in a chemical reaction