Chemistry Connections: "Chemistry Terminologies"

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Across
  1. 1. is the amount of energy required to push a reactant to the level necessary for action
  2. 4. anything that occupies space and has mass.
  3. 7. Non-symmetrical molecules that contain electrically unbalanced atoms.
  4. 9. Energy The energy directly involved in moving matter; e.g., in bicycle riding, the legs provide the mechanical energy that moves the pedals.
  5. 11. Different atomic forms of the same element, which vary only in the number of neutrons they contain; the heavier species tend to be radioactive.
  6. 13. bond An energy relationship holding atoms together; involves the interaction of electrons.
  7. 15. A substance that releases hydrogen ions when in solution; a proton donor.
  8. 21. Organic molecule that stores and releases chemical energy for use in body cells.
  9. 23. Isotope that exhibits radioactive behaviour.
  10. 25. stored energy, that is, inactive energy that has the potential, or capability, to do work but is not presently doing so.
  11. 26. A protein that acts as a biological catalyst to speed up a chemical reaction.
  12. 27. composition is dissimilar in different areas of the mixture.
  13. 28. the study of the chemical composition and reactions of living matter.
  14. 31. Organic compound composed of carbon, oxygen, hydrogen, and nitrogen; types include enzymes, structural components.
  15. 32. are substances composed of two or more components physically intermixed.
  16. 34. Organic compound containing nitrogen, car bon, hydrogen, and oxygen; building block of protein.
  17. 36. a nucleic acid found in all living cells; it carries the organism’s hereditary information.
  18. 40. A substance of high molecular weight with long, chain-like molecules consisting of many similar (repeated) units.
  19. 41. Class of organic molecules that includes DNA and RNA.
  20. 42. Nucleic acid that contains ribose and the bases A, G, C, and U. Carries out DNA’s instructions for protein synthesis.
  21. 43. Control centre of a cell that contains genetic material and clusters of nerve cell bodies in the CN.
  22. 44. the substance present in the greatest amount
  23. 45. Process in which molecules are formed, changed, or broken down.
  24. 47. Process that occurs before cell division; ensures that all daughter cells have identical genes.
  25. 50. Regions of space that consecutively surround the nucleus of an atom.
  26. 51. A chemical reaction in which larger, more complex atoms or molecules are formed from simpler ones.
Down
  1. 2. the smallest particle of an elemental substance that exhibits the properties of that element; composed of protons, neutrons, and electrons
  2. 3. Sum of the number of protons and neutrons in the nucleus of an atom
  3. 5. electrically balanced molecules
  4. 6. Group of chemical substances including certain hormones and cholesterol; they are fat soluble and contain little oxygen.
  5. 8. An average of the relative weights of all the isotopes of an element, taking into account their relative abundance in nature
  6. 10. Energy stored in the bonds of chemical substances.
  7. 12. substances present in smaller amounts
  8. 14. The capacity to do work, or to put matter into motion.
  9. 16. Displacement reaction in which mixing an acid and a base forms water and a salt.
  10. 17. A reactant on which an enzyme acts to cause a chemical action to proceed
  11. 18. A substance capable of binding with hydrogen ions; a proton acceptor.
  12. 19. mixture that has exactly the same composition or makeup throughout.
  13. 20. energy that travels in waves
  14. 22. Bond joining the amine group of one amino acid to the acid carboxyl group of a second amino acid with the loss of a water molecule.
  15. 24. Suspensions are heterogeneous mixtures with large, often visible solutes that tend to settle out.
  16. 29. Process of substances combining with oxygen or the removal of hydrogen.
  17. 30. The number of protons in an atom.
  18. 33. One of a limited number of unique varieties of matter that composes substances of all kinds.
  19. 35. This is equal to its atomic weight or its molecular weight measured in grams.
  20. 37. Energy formed by the movement of charged particles across cell membranes.
  21. 38. is energy in action.
  22. 39. A chemical bond between atoms formed by the transfer of one or more electrons from one atom to the other.
  23. 46. Particle consisting of two or more atoms joined together by chemical bonds.
  24. 48. Subatomic particle that bears a positive charge; located in the atomic nucleus.
  25. 49. A way to express the concentration of a solution; moles per litre of solution.