Across
- 1. SI unit of volume
- 3. (also, solution) combination of substances with a composition that is uniform throughout
- 8. substance that is composed of a single type of atom; a substance that cannot be decomposed by a chemical change
- 9. standards fixed internal agreement in the International System of Units
- 12. (also, significant digits) all of the measured digits in a determination, including the uncertain last digit
- 14. volume of a cube with an edge length of exactly 1 cm
- 15. intensive property representing the hotness or coldness of matter
- 16. measure of one dimension of an object
- 18. state of matter that has a definite volume but indefinite shape
- 19. study of the composition, properties, and interactions of matter
- 20. ratio of mass to volume for a substance or object
- 26. smallest particle of an element that can enter into a chemical combination
- 27. standard SI unit of mass
- 28. state of matter that is rigid, has definite shape, and has a fairly constant volume
- 31. how closely a measurement matches that same measurement when repeated
- 33. SI unit of time
- 34. unit of temperature; water freezes at 0 C° and boils at 100 degree C on this scale
- 35. statement that summarizes a vast number of experimental observations, and describes or predicts some aspect of the natural world
- 36. (also, cubic decimeter) unit of volume; 1 L = 1,000 cm^3
- 37. standard of comparison for measurements
- 38. state in which matter has neither definite volume nor shape
- 40. combination of substances with a composition that varies from point to point
- 43. unit of temperature; water freezes at 32 degrees F and boils at 212 degrees F on this scale
- 48. anything that occupies space and has mass
- 50. bonded collection of two or more atoms of the same or different elements
- 52. change in the states or properties of matter that does not involve a change in its chemical composition
- 53. realm of things that are much too small to be sensed directly
Down
- 2. pure substance that can be decomposed into two or more elements
- 4. force that gravity exerts on an object
- 5. ratio of equivalent quantities expressed with different units; used to convert from one unit to a different unit
- 6. amount of space occupied by an object
- 7. gaseous state of matter containing a large number of electrically charged atoms and/or molecules
- 10. (also, factor-label method) versatile mathematical approach that can be applied to computations ranging from simple unit conversions to more complex, multistep calculations involving several different quantities
- 11. matter that can be separated into its components by physical means
- 13. 1/1,000 of a liter; equal to 1 cm^3
- 14. change in producing a different kind of matter from the original kind of matter
- 17. characteristic of matter that is not associated with any change in its chemical composition
- 21. property of a substance that depends on the amount of the substance
- 22. when matter converts from one type to another or changes form, there is no detectable change in the total amount of matter present
- 23. property of a substance that is independent of the amount of the substance
- 24. homogenous substance that has a constant composition
- 25. SI unit of temperature; 273.15 K = 0 degrees C
- 29. tentative explanation of observations that acts as a guide for gathering and checking information
- 30. estimate of amount by which measurement differs from true value
- 32. number derived by counting or by definition
- 39. path of discovery that leads from question and observation to law or hypothesis to theory, combined with experimental verification of the hypothesis and any necessary modification of the theory
- 41. well-substantiated, comprehensive, testable explanation of a particle aspect of nature
- 42. procedure used to ensure that calculated results properly reflect the uncertainty in the measurements used in the calculation
- 44. realm of things that are too much too small to be sensed directly
- 45. how closely a measurement aligns with a correct value
- 46. behavior that is related to the change of one kind of matter into another kind of matter
- 47. specialized language used to represent components of the macroscopic and microscopic domains, such as chemical symbols, chemical formulas, chemical equations, graphs, drawings, and calculations
- 49. standard metric and SI unit of length; 1 m = approximately 1.094 yards
- 51. fundamental property indicating amount of matter