Chem Extra Cred Part 2

Chem Extra Cred Part 2

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  • Anyways, today we'll be learning about acids and bases!
  • Hey, where did Richie and Jack go? That was kind of weird (and lame).
  • This is a very basic unit, I expect everyone to do well. . . Yes, even you, Anne.
  • Acids, any molecules starting with H, ionizing into H+ ions in an aqueous solution will react with bases, any molecules ending with OH, ionizing into OH-  in a solution. How they react is defined by how far apart they are on the pH scale, 0 being the strongest acids while 14 being the strongest bases, however there are exceptions that can reach negative or numbers past 14. We can tell how acidic or basic a substance is by using indicators, which can be either naturally or artificially derived, and they will give us a visual queue about the contents of what we're testing. Be careful since substances like phenolphthalein are slightly acidic, so only add a few drops at a time! To show how they react, we will be doing a titration lab later in the week and we'll see how acids and bases neutralize each other when they react. Extra credit will be given to whomever can pronounce phenolphthalein!
  • Wait, isn't second semester almost over?
  • What!? Hydrogen can react with hydrogen!? Sorry Mr. O'Sullivan, but I can't do this!
  • Hey, I remember this from second grade!
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