Chemistry

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Across
  1. 3. acids composed of two atoms, a hydrogen element and a nonmetal element.
  2. 7. an acid that lost its hydrogen ion
  3. 10. a point in a titration that signifies the completion of the titration by a change in the colour or intensity of the solution.
  4. 13. acids that can lose several protons per molecule
  5. 14. a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
  6. 17. a substance that donates a proton to another substance.
  7. 19. a solution that can resist changes in PTT when an acid or base is added to it; a buffer
  8. 20. compounds that, when dissolved in water, increase the concentration of hydrogen ions (H+) and are characterized by a sour taste and a pH below 7
Down
  1. 1. a proton acceptor
  2. 2. a hydrodium ions are the combination of a water molecule and a hydrogen ion, resulting in the formula, H 3 O +.
  3. 4. two substances that differ only by the presence of a proton
  4. 5. the substance that causes a solution to resist change
  5. 6. acids composed of two atoms, a hydrogen element and a nonmetal element
  6. 8. An acid that breaks down completely and gives off many ions, or protons
  7. 9. (of a compound, especially a metal oxide or hydroxide) able to react both as a base and as an acid.
  8. 11. the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization.
  9. 12. a chemical reaction in which acid and a base react with an equivalent quantity of each other.
  10. 15. a chemical reaction in which a chemical compound is broken down by reaction with water.
  11. 16. any process by which electrically neutral atoms or molecules are converted to electrically charged atoms or molecules (ions) through gaining or losing electrons .
  12. 18. low concentration of OH ions.