Capsaicin

(10 Points): Create a custom Capsaicin page that includes the following information. 1 point for MEDIA (picture/video/sheet/etc) and 1 point for accompanying text. Make your page as 🔥🔥🔥 as capsaicin.

(2 points) Chemistry of Capsaicin: How does the structure affect Capsaicin behavior and interactions with other chemicals. Is it polar or nonpolar? Organic or inorganic? Mixes with oil or water?

(2 points) Source of Capsaicin: Where is it found? How do we extract it? What processes are involved? How do we measure the concentration (is there a scale?)

(2 points) History of Capsaicin: When was it discovered? What societies through history have used Capsaicin? How has it impacted humans or cultures over time?

(2 points) Industrial Applications of Capsaicin: How is it used now? What industries is it used in? Can we use it at school? What professions might use Capsaicin?

(2 points) Biological Impacts of Capsaicin: How does it interact with our bodies? What mechanisms does Capsaicin trigger? What organs are affected by Capsaicin, and are there any associated diseases or health benefits? Are any animals immune from the effects of Capsaicin?

Remember, each category requires 1 piece of media and an accompanying text!

Extra Credit (5 points)

Bring in an unopened bottle of hot sauce to donate to Room 65, record the evidence (via picture or video), and post it on the page.

Step 1: Mass your chalk on the digital scale before use

Step 2: Write out your formulas and the message on the island tables. Record new mass.

Step 3: Dilute your HCl (1M -> .1M)

Step 4: Neutralize your chalk (.1g)

Lab 9 - Titration of Alkaline Water

Step 1: Dilute your HCl (1M -> .1M)

Step 2: Set-up your solutions samples (collect from TA at front)

Step 3: Add 1 mL universal indicator to each solution. Titrate solvents with .1M HCl

Step 4: Plot your pH vs drops graph (quiz soon!)

The following 20 questions will be posted on the class quickwrite. Please complete all documentation in your lab composition notebook, and make a copy of all group-generated from the Padlet to your personal Drive for sharing.

1. [Response] Partners (3 max)

2. [Essay] Have you consumed alkaline water before? Who purchased it? Why did they purchase it?

3. [Response] What is the atomic composition of the acid in the human stomach? Include both the molecular formula and its common name (Hint: We have used it in the lab on a few occasions)

4. [Number] During active digestion, this acid can reach pH=1. What is the concentration of [H+]? (pH = -log[H+] || 10^(-pH) = [H+]; *use a calc if you aren’t in Alg2)

5. [Response] Baking soda has a formula of NaHCO3 (sodium bicarbonate). Is baking soda considered a base or an acid?

6. [Response] HCl + NaHCO3 -> NaCl + H2O + CO2. Write out the name of each of those molecules (you should be able to pronounce them!).

7. [Drive] Collect a 10mL graduated cylinder. Collect 1mL of 1M HCl from the TA in the front. Take a picture of the 1mL of acid. Drive + Share + Link

8. [Drive] Collect a 100mL beaker and retrieve 30mL DI (de-ionized) water from Smith. Dilute your 1M HCl solution into a .1M solution by pipetting DI water to the 10mL line in the graduated cylinder. Mix the solution (mild agitation with the pipette). Take a picture with the kiosk camera. Drive + Share + Link

9. [Response] Collect 100mL of tap water into an Erlenmeyer flask. Label. What did you label it?

10. [Response] Collect 100mL of alkaline water. Label. What did you label it?

11. [Response] Collect 100mL of baking soda buffer. Label. What did you label it?

12. [Drive] Take a picture of all 3 flasks next to each other. Drive + Share + Link

13. [Link] Make a chart of pH (y) vs HCl drops (x) for each of the solutions. Be sure to accommodate up to 100+ drops! Copy this data into a Google Sheet. Drive + Share + Link

14. [Drive] Add 1mL of universal indicator to each flask. Line them up for a pic. Drive + Share + Link.

15. [Response] Acquire a pH probe. What is the probe serial #? (These are Ms. Lindsay’s probes so don’t mess them up please! The probe has a small delicate bulb at the submersed end that can not be damaged and must always be wet. Please move the pH pen to your solution from the storage buffer tube and back to the buffer tube when needed.)

16. [Drive] Record a 10s video clip (kiosk) of your titration process. Add 1 drop of HCl to your flask, mix, wait for pH pen to calibrate (2s) and then record data before adding additional drops and repeating (until pH = 3 for each solution). Drive + Share + Link

17. [Drive] Complete the titration (pH = 3) for all 3 solutions. Collect all drop/pH data. Once completed, stack all 3 flasks next to each other. Take a picture (kiosk). Drive + Share + Link.

18. [Drive] Generate a digital graph of each of your 3 titrations (Google Sheets). Drive + Share + Link

19. [Essay] Even at the "weakest" resting concentration (.001M), stomach acid is still 1,000 to 10,000 times more concentrated than the hydroxide ions (OH-) found in a bottle of pH 9.5 alkaline water (which is only 3.1*10^(-5) [OH-]). In order to neutralize this amount of acid, you would need 1582L of pH 9.5 alkaline water. Based on the numbers you generated in the lab, do you believe this is an accurate statement? What does it mean about alkaline water and health?

20. [Response] Feedback/comments.

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