1. Science Starter When do you take tums or Pepto-Bismol?
What do you think is inside these two medicines?
What do you think these two medicines do to help your stomach?
**Turn in your Ch.1 Pretest HW even if you are not done!**

2. Today’s Agenda Science Starter Organic Compounds Lab Lab Discussion
Quiz Return
Exit Quiz/Homework

3. Egbert's Stomach
Today we will be finishing our discussions of organic molecules and chemistry
The goal of this lab will be to identify the contents of Egbert’s stomach using various solutions
Important to consider positive vs. negative results
Consider why these reactions are taking place

4. Materials At your Station: Egbert’s stomach contents 4 test tubes
Test tube rack
Gloves
Goggles
Brown Paper
Beakers
Glass Dropper
At Front:
Biuret Solution
Benedict’s Solution
Iodine
Paper Towels

5. Want to check your work??
OR you can google “occc biology labs organic compounds” and click on first link

6. CARBOHYDRATES TEST FOR SUGARS = BENEDICT’S REAGENT
POSITIVE TEST RESULT: BROWN SOLUTION

7. CARBOHYDRATES TEST FOR STARCHES (CARBOHYDRATES) = IODINE
POSITIVE TEST RESULT: PURPLE/BLACK SOLUTION

8. LIPIDS TEST FOR LIPIDS = SUDAN IV OR BROWN PAPER BAG
POSITIVE TEST RESULT: RED SOLUTION

9. PROTEINS TEST FOR PROTEINS = BIURET’S REAGENT
POSITIVE TEST RESULT: PURPLE SOLUTION

10. Egbert Lab Discussion
How do we know if a certain organic molecule was present?
What are the contents of Egbert’s stomach?
What is the point of this lab?

11. Organic Molecules Quiz
Quiz score should be at top right
Look at the questions you missed with your notes, make sure you understand these basic concepts!!
If you are struggling with this content, please stay after school this week (tomorrow or Thursday)
Remember that quiz grades are now informal, so do your homework!!

12. Exit Quiz & Homework
For homework complete your lab report and turn in tomorrow (white sheet and separate sheet with answers)
For exit quiz take out a piece of paper, pencil, and put everything else away!!

13. Exit Quiz What organic molecule are starches/sugars?
What is the role of protein in the body?
What is the role of fat in the body?