chemistry

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Across
  1. 2. doesn't have the characteristics of metal
  2. 4. rare earth element with symbol Pr and atomic number 59
  3. 6. chemical reaction in which a radical removes a proton from a molecule
  4. 9. the three-dimensional space occupied by a solid, liquid, or gas
  5. 10. a separation of electrical or magnetic charges
  6. 12. unable to dissolve in a solvent
  7. 14. deoxyribonucleic acid
  8. 15. electrically neutral group of two or more atoms held together by chemical bonds
  9. 18. mediated by magnetic fields.
  10. 19. fundamental piece of matter
  11. 20. process of converting a material from a solid or gas phase into the liquid phase
  12. 22. the action or process of filtering something
  13. 23. unit of length in the imperial and United States customary systems of measurement
  14. 30. branch of science that involves the study of the composition
  15. 35. spontaneous emission of radiation as particles or photons from a nuclear reaction
  16. 36. most prominent organelle in a cell
  17. 37. mixture that has the same proportions of its components throughout any given sample
  18. 38. results from a combination of two or more different chemical elements
  19. 40. metalloid with element symbol Ge and atomic number 32
  20. 42. phase transition from solid phase directly to vapor phase
  21. 43. removing a liquid layer that is free of a precipitate, or the solids deposited from a solution
  22. 46. positive electric charge
  23. 47. an aqueous solution with a pH greater than 7
  24. 49. phase transition from the liquid to gas state
  25. 50. solidification of atoms or molecules into a highly structured form called a crystal
  26. 51. substance that is dissolved in a chemical solution homogeneous mixture of two or more substances
Down
  1. 1. nearly incompressible fluid
  2. 3. a substance that contains an -OH group attached to a hydrocarbon
  3. 5. process of settling or being deposited as a sediment
  4. 7. matter remaining after evaporation or distillation
  5. 8. measure of heat or cold
  6. 11. superfluid phase formed by fermionic particles at low temperatures
  7. 13. pure substance
  8. 16. group of 8 valence electrons around an atom
  9. 17. state of matter in which an ionized gaseous substance becomes highly electrically conductive
  10. 21. organic molecule comprised of a nucleotide base, ribose or deoxyribose, and one or more phosphate groups
  11. 24. thread-like structures located inside the nucleus
  12. 25. able to be shaped or pounded with a hammer, usually applied to metals
  13. 26. processes of living organisms
  14. 27. radioactive gas with element symbol Rn and atomic number 86
  15. 28. movement of gas through a pore or capillary into a vacuum or another gas
  16. 29. separation by inner molecular attractions.
  17. 30. ion with a positive electrical charge
  18. 31. the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value
  19. 32. unit of mass equal to the mass of one cubic centimeter of water at 4°C
  20. 33. is the name for the element with atomic number 8 and is represented by the symbol O
  21. 34. substance formed as a result of a chemical reaction
  22. 39. starting material for a chemical reaction
  23. 41. occupies physical space
  24. 44. mass per unit volume
  25. 45. action of purifying a liquid by a process of heating and cooling
  26. 48. prefix meaning "one thousand"