Honors Biology - Chapter 2: Chemistry of Life - Vocabulary

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Across
  1. 3. attractive force that holds molecules of a single substance together
  2. 8. atoms of the same element that have a different number of neutrons
  3. 9. attractive force that holds atoms together
  4. 11. attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid
  5. 16. the OH- ion created when one water molecule pulls apart another water molecule
  6. 19. protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed
  7. 21. solution that has a greater number of hydroxide ions than hydronium ions
  8. 22. the amount of solute dissolved in a fixed amount of solvent
  9. 23. solution in which no more solute can dissolve
  10. 25. center of the atom, makes up most of the mass, contains protons and neutrons
  11. 26. amount of energy needed to start a reaction
  12. 30. substances that cannot be broken down chemically into simpler kinds of matter
  13. 32. reduce the amount of activation energy needed for a reaction to take place
  14. 33. simplest particle of an element that retains all the properties of that element
  15. 34. compares the relative concentrations of hydronium ions and hydroxide ions in a solution, ranges from 0-14, 0 is very acidic, 7 is neutral, & 14 is very basic
  16. 35. mixture in which one or more substances are uniformly distributed in another substance
  17. 36. chemical substances that neutralize small amounts of either an acid or a base added to a solution
  18. 37. atom or molecule with an electrical charge
  19. 42. forms when 2 atoms share one or more pairs of electrons
  20. 44. simplest part of a substance that retains all of the properties of that substance
  21. 45. equal to the total number of protons and neutrons of an atom
Down
  1. 1. the ability to do work
  2. 2. substance dissolved in the solvent
  3. 3. atoms of 2 or more elements that are combined in fixed proportions
  4. 4. particle that has no charge
  5. 5. solution that has a greater number of hydronium ions than hydroxide ions
  6. 6. starting substances in a chemical reaction, shown on the left side of a chemical equation
  7. 7. attractive force between oppositely charged ions which form when electrons are transferred from one atom to another
  8. 10. attractive force between a hydrogen molecule with a with a partial positive charge and another atom or molecule with a partial or full negative charge
  9. 12. attractive force between two particles of different substances
  10. 13. solution in which water is the solvent
  11. 14. the H3O+ ion created when a free H+ ion reacts with a water molecule
  12. 15. one or more substances change to produce one or more different substances
  13. 17. reaction in which a reactant gains one or more electrons becoming more negative in charge
  14. 18. reaction in which a reactant loses one or more electrons becoming more positive in charge
  15. 20. the quantity of matter an object has
  16. 24. 3-dimensional region around a nucleus that indicated the probable location of an electron
  17. 27. reaction in which electrons are transferred between atoms
  18. 28. anything that occupies space and has mass
  19. 29. molecule with unevenly distributed charges
  20. 30. negatively charged particle
  21. 31. number of protons in an atom
  22. 38. all of the chemical reactions that occur in an organism
  23. 39. positively charged particle
  24. 40. substances formed during a chemical reaction, shown on the right side of a chemical equation
  25. 41. Biology Chapter 2: Chemistry of Life – Vocabulary
  26. 43. substance in which the solute is dissolved