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