Chemistry Comes Alive

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Across
  1. 4. Number, Number of protons in an atom.
  2. 5. Bonds, Formed when electrons are transferred between atoms.
  3. 7. Composed of linked monosaccharides.
  4. 10. Compounds, Lack carbon.
  5. 11. Bonds, Formed when atoms share electrons.
  6. 12. Negatively charged ion.
  7. 13. Produces hydroxide ions (OH⁻) in water.
  8. 15. Substances formed by a chemical reaction.
  9. 18. Positively charged ion.
  10. 20. A substance that can't be broken down chemically.
  11. 22. The force gravity exerts on an object.
  12. 24. Weight, Average mass of all isotopes of an element.
  13. 26. Energy (PE), Energy due to an object's position.
  14. 27. Strong intermolecular attraction between particles.
  15. 29. Positively charged particle in the nucleus.
  16. 32. Repeating unit of a polymer.
  17. 36. Insoluble in water, dissolve in lipids/organic solvents.
  18. 38. Atomic mass minus atomic number.
  19. 40. Takes the shape of its container.
  20. 42. Energy, Travels in waves.
  21. 43. The study of matter and its changes.
  22. 47. Two or more atoms held by chemical forces.
  23. 48. Starting materials in a chemical reaction.
  24. 49. Basic unit of nucleic acids.
  25. 50. Universal energy compound of cells.
Down
  1. 1. Produces hydrogen ions (H⁺) in water.
  2. 2. The amount of matter in an object.
  3. 3. Substance with two or more elements chemically bonded in fixed proportions.
  4. 6. Region around the nucleus where electrons are likely found.
  5. 8. Combination of substances retaining their identities.
  6. 9. Compounds, Contain carbon.
  7. 14. Inorganic compound making up 60-80% of cell volume.
  8. 16. Unstable isotopes that decay spontaneously.
  9. 17. Ionic compound without H⁺ or hydroxyl ions.
  10. 19. The basic unit of an element.
  11. 21. Negatively charged particle equal in magnitude to the proton's charge.
  12. 23. Number, Total number of protons and neutrons in an atom.
  13. 25. Mixture with non-uniform composition.
  14. 28. Rays, High-energy radiation.
  15. 30. Energy (KE), Energy of a moving object.
  16. 31. Written above the normal line.
  17. 33. The capacity to do work.
  18. 34. Biological catalyst that speeds up reactions by lowering activation energy.
  19. 35. Single-stranded nucleic acid.
  20. 37. The substance in larger quantity in a solution.
  21. 39. Has no definite shape or volume.
  22. 41. Mixture with uniform composition.
  23. 44. The substance in smaller quantity in a solution.
  24. 45. Atoms with the same atomic number but different mass numbers.
  25. 46. Dense core of an atom.