How Hot is Your Hot Chocolate?

Project #3329 on iSENSEProject.org

Fields were populated with data gathered from Vernier sensor probe placed in a cup of hot chocolate (initial temperature of 71.6 C) for five minutes. Information regarding optimal temperatures for hot beverages was taken from National Center for Biotechnology Information at https://www.ncbi.nlm.nih.gov/pubmed/18226454 .Students would be presented with the following:

The National Center for Biotechnology Information reports that most hot beverages are served between 71C and 85C, but this temperature could still cause a burn to your mouth. This organization notes the best temperature for safety and taste is about 57.8C. Look at the visualization https://isenseproject.org/visualizations/1624 for this project and answer the following questions: (Please remember time is shown in seconds and 60 seconds=1 minute). 

Your hot chocolate was served to you at approximately 72C. What was the temperature of your hot chocolate after you let in cool for 90 seconds or 1 1/2 minutes?

How much cooler is your hot chocolate if you wait 4 minutes instead of 2 minutes for it to cool? (please show your work by creating a number sentence)

You waited five minutes for your hot chocolate to cool. What was the temperature of the hot chocolate after five minutes of cooling? 

After cooling for five minutes, do you think the hot chocolate would be safe for you to drink at that time and you would like the temperature of the hot chocolate? Please explain your answer.