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Across 2. A measure of mass per unit volume (how tightly packed) 4. Substance derived from a living thing 6. These explain "what" happens scientifically (often mathematically) 10. Data lacking statistical or numerical values 13. The amount of space an object or material occupies 15. What sucrose can do in water 17. To hypothesize 22. The most common or natural level of the IV 23. Variables are linked together in some unknown way 25. The first scientist 26. Conducted the Gold Foil Experiment, discovered the nucleus, atoms are mostly empty space 28. The number of times an experiment is repeated at a given level 29. Considered the "Father" of modern chemistry 31. Compressible material that assumes the shape of its container 36. The responding variable in an experiment 38. Able to burn 39. These are made through the senses 43. Made out of multiple atoms chemically bonded together 46. The greek word "indivisible" 47. Developed the Atomic Theory of Matter 50. These subatomic particles have no charge but a mass of 1 amu 51. Accepted or rejected at the conclusion of an experiment 52. A positively charged particle in the nucleus of an atom 53. The amount of matter out of which a material or object is formed 54. One's own interpretation (internal) 55. Link together available information based upon prior knowledge 56. ex: compounds and elements 57. The result of dissolving sugar in water 58. Incompressible material with a fixed shape

Down 1. Column on the PT 3. Fat is this in water 5. Type of chemical bond in which valence electrons are shared 7. Developed the Uncertainty Principle, aided in the atomic "cloud" model 8. A method used to determine the volume of irregularly shaped objects 9. Based upon methodical, experimental research 11. The variable the experiment changes in an experiment 12. Mixture of visibly different parts 14. The process of methodically testing a hypothesis 16. Developed the first PT 18. Numbered data 19. Worked on the Manhattan Project 20. A pure substance comprised of only one type of atom 21. The amounts by which the IV is changed 22. The type of relationships that scientists want to discover the most 24. Class of compound formed when a metal and nonmetal bond ionically 25. These explain "why" things happen scientifically 27. Phase/State of matter out of which stars are formed 30. Able to burn 32. Incompressible material that assumes the shape of its container 33. Mixture that's uniformly mixed 34. To organize into groups of like kind 35. Chemical bond resulting from temporary charges that are assumed in order for atoms to reach chemical stability 37. A negatively charged subatomic particle 40. He developed the idea "atomos" 41. Able to be drawn into a thin wire 42. Conducted Cathode Ray Tube Experiment, found the electron, Plum Pudding Model 44. Evaluation relative to an external thing 45. Row on the PT 48. shine 49. Unchanging