Introductory Chemistry laboratories must go beyond "cookbook" methods to illustrate how chemistry concepts apply to complex, real-world problems. In our case, we are preparing students to use their chemistry knowledge in the healthcare profession. The experiment described here explicitly models three important chemical concepts: dialysis of small molecules (dye), reversible binding (dye binding to albumin), and competitive binding (dye and a competitor binding to albumin). Moreover, each concept is intimately related to a physiological phenomenon: dialysis is used to treat renal failure, drugs travel in the blood bound to albumin, and competitive albumin binding is a common drug− drug interaction. In the context of this simple series of experiments, students create models, use evidence to validate their models, and finally use their understanding to describe physiological phenomena. This laboratory experiment was implemented in a 100level course for predominantly prenursing majors. Student pre-and postlab models were examined, illustrating an improved conceptual understanding upon performing the lab and use of evidence to improve or support models. This experiment can be performed in 1 h, and can be adapted as a lecture demonstration.

Knowledge of functional groups provides students with a language for organic chemistry. However, students in a health science chemistry course do not plan to be synthetic organic chemists and, therefore, need examples of how functional group chemistry is relevant to their vocational goals. We have developed a lab to demonstrate how simple functional group chemistry is used in laboratory testing, namely, the "pee test", or dipstick urinalysis. Dipstick urinalysis is frequently used to screen for various conditions and is used weekly in the last month of pregnancy. Our lab models the prenatal clinical environment. The laboratory allows for testing of chemical species that support a medical diagnosis: albumin testing for preeclampsia; leukocytes, nitrites, and pH for urinary tract infection; glucose, ketones, and pH to test for gestational diabetes, alcoholism, or other serious metabolic diseases. The related lessons are designed to support students in understanding the reactions involved in testing, biochemistry related to diagnosis, and general understandings of how tests are interpreted. In developing this experiment, we were confronted with disparities in prenatal care, namely, the absence of culturally competent care, inequitable access to care, and toxic stress due to racism that contribute to dramatically increased maternal death rates for women of color in the US. We identified resources to educate students on culturally competent care. These resources include reference to the way in which the "pee test" is administered. We have incorporated this resource into our lab with appropriate reflection questions, based on our newly devised cultural competence and social justice framework for chemistry students. Our findings indicated that student understandings of the chemistry and testing methods were adequate; on average, 77% of samples were properly diagnosed. With respect to social justice and cultural competence, we found that students predominantly discussed two elements of the cultural competence and social justice framework: reflection on privilege in society and agency to promote equity in healthcare.