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1 6 10 Enzymes, Day 3


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1 6 10 Enzymes, Day 3

  1. 1. LAUNCH <ul><li>Guess whether the following household items are acidic or basic and predict what their actual pH is. </li></ul><ul><li>1. Clorox Bleach </li></ul><ul><li>2. Lemon Juice </li></ul><ul><li>3. Mouthwash </li></ul><ul><li>4. Vinegar </li></ul><ul><li>5. Ammonia </li></ul><ul><li>6. Baking Soda </li></ul>
  2. 2. Answer <ul><li>Clorox Bleach, 12.6 </li></ul><ul><li>STRONG BASE! </li></ul>
  3. 3. Answer <ul><li>Lemon Juice, 2.3 </li></ul><ul><li>STRONG ACID!!! </li></ul>
  4. 4. Answer <ul><li>Mouthwash, 4.1 </li></ul><ul><li>Weak acid </li></ul>
  5. 5. Answer <ul><li>Vinegar, 3 </li></ul><ul><li>Strong Acid </li></ul>
  6. 6. Answer <ul><li>Ammonia, 10 </li></ul><ul><li>Strong Base!!! </li></ul>
  7. 7. Answer <ul><li>Baking Soda, 8.4 </li></ul><ul><li>Weak Base </li></ul>
  8. 8. Enzymes, Day 3
  9. 9. Enzymes are proteins
  10. 10. <ul><li>Changing the pH or temperature of the enzyme is the best way to stop it </li></ul><ul><li>If we effect an enzyme so that it doesn’t work, what happens to the chemical reaction? </li></ul><ul><ul><li>A. It speeds up </li></ul></ul><ul><ul><li>B. It slows down </li></ul></ul><ul><ul><li>C. It stops </li></ul></ul><ul><ul><li>D. Nothing happens to the reaction </li></ul></ul>
  11. 11. What happens when it gets hot? <ul><li>Just like a plastic tape dispenser can’t work when it is melted, enzymes can’t work if they get too hot and are “melted” </li></ul><ul><li>We call this “ denatured ” </li></ul>