General Education Common Graded Assignment: CHEM100 2017 “To Drink or Not to Drink”

CHEM100 is a general education course designed to assist students in the exploration of interaction between chemistry and human society. One of the goals of this assignment is to assess student competence for each of these objectives:

I. Written and Oral Communication— describe the chemistry behind everyday household substances

II. Critical Analysis and Reasoning— create a graph to present data, extract quantitative information, and make predictions

III. Technological Competence – create a graph to present data, extract quantitative information, and make predictions.

IV. Information Literacy— use appropriate resources and documents, including print and digital media, to gather physical and chemical data

V. Scientific and Quantitative or Logical Reasoning— convert between the metric system and English system

VI. Local and Global Diversity—describe the effects of an everyday chemical substance on human health and discuss what factors contribute to variation in the prevalence of those health concerns in different U.S. ethnic groups.

In addition to the above general education objectives, this assignment assesses students’ understanding and application of the following skills and knowledge specific to CHEMISTRY 100

• use significant figures in evaluating data • determine the concentration of solute in a solution • determine the density of a solution • create and interpret a graph

ASSIGNMENT: Purpose: To analyze given data in order to make a decision on the consumption of sugar contained in a Kool-Aid solution. Audience: General public Directions: Please answer all parts of the question shown below. Work must be shown for all

calculations. Explanations must be written in sentences and be grammatically correct and calculated results must be expressed with the proper numbers of significant digits and units.

ASSIGNMENT SPECIFICATIONS:

• Answers to parts a) – d) must be neatly written in the provided space. • The graph must be submitted with the rest of the assignment as a separate page. • A minimum of 300 words must be typed in Times New Roman 12-pt font, double-spaced with 1”

margins for the answer to part e). Part f) must also be typed with the same format. The Works Cited page is not included in the assigned word count.

• APA style format and documentation for parenthetical citations and a Works Cited page. • Minimum of three (3) peer-reviewed sources. • Utilize library databases to locate appropriate sources.

GRADING:

• This assignment will account for 10% of the total course grade. • See attached rubric for details about how your assignment will be graded.

CHEM 100 CGA, FALL 2017

Section: __________ Date: __________ Name:_________________________________ SUBMISSION GUIDELINES:

• The deadline for submission is Saturday, November 11 at 11:59 PM. Late submissions will have 10% deducted per day late.

• Copies of the assignment should be submitted to the instructor electronically via email, and all parts of the assignment should be attached in a single email. You may handwrite and scan calculations, but parts (e) and (f) should be typed). Please submit these via email using your CCBC address rather than via Course Messages. Email is available as a link in the left-hand menu bar in Blackboard. Course Messages only allows you to attach one file per message sent.

• Make sure the subject line of your email includes your name and “CHEM 100 CGA submission.”

• Number your pages and make sure that every page you submit has your name and the course and section number. Make sure that your name and the course and section number are listed every page you submit.

CHEM 100 CGA, FALL 2017

Section: __________ Date: __________ Name:_________________________________ John is diabetic and tries to watch his sugar intake, but he enjoys Kool-Aid drink containing real sugar. He mixes a single 6.6-ounces packet of powder into a 500-mL water bottle. John has data (table 1) that correlates the density of Kool-Aid solution (in grams per mL of Kool-Aid solution) to the sugar concentration (in grams of sugar per 100 mL of Kool-Aid solution). As his roommate, help John answer the following questions to determine how much of the Kool-Aid drink he can have without risking his health.

a) Convert the mass of the powder to grams.

b) The density of water is 1.000 g/mL. Assuming that the added Kool-Aid powder does not change the volume of the resulting solution significantly, calculate the density of the Kool-Aid solution. Don’t forget to account for the water!

c) Using the data below that John has on the correlation of the density of Kool-Aid solution to the sugar concentration, generate a graph. From this graph, determine the amount of sugar in the 500.0-mL bottle of the Kool-Aid solution. (Remember to attach the graph as a separate page.)

Table 1. The density of Kool-Aid drink in grams per milliliter as a function of the concentration of sugar in grams per 100 milliliters.

Concentration (g/100mL) Density (g/mL) 5.00 1.078 7.50 1.120 10.00 1.161 12.50 1.190 15.00 1.230

CHEM 100 CGA, FALL 2017

Section: __________ Date: __________ Name:_________________________________

d) If the maximum amount of sugar John can have is 12.00 grams, what is the maximum volume of the drink that John should have?

e) John is not alone in his condition. Tom, John’s other roommate who is also diabetic, decides to mix and drink an entire bottle of Kool-Aid solution. Is Tom helping or hurting his condition? What could happen if Tom consumes more sugar than then recommended amount?

f) Discuss the prevalence of diabetes among at least 3 different ethnic groups in the United States. What are the factors that may contribute to the difference among these groups (e.g. nutritional, cultural, social-economical factors)?