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1 - 5 of 5 results for: Jennifer Schwartz Poehlmann

CHEM 10: Exploring Research and Problem Solving Across the Sciences

Development and practice of critical problem solving and study skills using a wide variety of scientific examples that illustrate the broad yet integrated nature of current research. Students will build a problem solving tool-kit and apply chemical and mathematical concepts to solve problems related to energy, climate change, water resources, medicine, and food & nutrition. Note: course offered in August prior to start of fall quarter, and only Leland Scholar Program participants will register.
Terms: Aut | Units: 1

CHEM 31A: Chemical Principles I

31A is the first course in a two-quarter sequence designed to provide a robust foundation in key chemical principles for students with limited or no background in chemistry. The course engages students in group problem-solving activities throughout the class periods to deepen their ability to analyze and solve chemical problems. Students will also participate in one weekly laboratory activity that will immediately apply and expand upon classroom content. Labs and write-ups provide practice developing conceptual models that can explain qualitatively and quantitatively a wide range of chemical phenomena. The course will introduce a common language of dimensional analysis, stoichiometry, and molecular naming that enables students to write chemical reactions, quantify reaction yield, and calculate empirical and molecular formulas. Stoichiometry will be immediately reinforced through a specific study of gases and their properties. Students will also build a fundamental understanding of atom more »
31A is the first course in a two-quarter sequence designed to provide a robust foundation in key chemical principles for students with limited or no background in chemistry. The course engages students in group problem-solving activities throughout the class periods to deepen their ability to analyze and solve chemical problems. Students will also participate in one weekly laboratory activity that will immediately apply and expand upon classroom content. Labs and write-ups provide practice developing conceptual models that can explain qualitatively and quantitatively a wide range of chemical phenomena. The course will introduce a common language of dimensional analysis, stoichiometry, and molecular naming that enables students to write chemical reactions, quantify reaction yield, and calculate empirical and molecular formulas. Stoichiometry will be immediately reinforced through a specific study of gases and their properties. Students will also build a fundamental understanding of atomic and molecular structure by identifying interactions among nuclei, electrons, atoms and molecules. Through both lab and in-class exploration, students will learn to explain how these interactions determine the structures and properties of pure substances and mixtures using various bonding models including Lewis Dot, VSEPR, and Molecular Orbital Theory. Students will identify and quantitate the types and amounts of energy changes that accompany these interactions, phase changes, and chemical reactions, as they prepare to explore chemical dynamics in greater depth in 31B. Special emphasis will be placed on applying content and skills to real world applications such as estimating the carbon efficiency of fossil fuels, understanding hydrogen bonding and other interactions critical to DNA, and calculating the pressure exerted on a deep-sea diver. No prerequisites. Students without AP/IB background are given enrollment priority. This course is not intended for students with AP scores of 4-5; they should instead take Chem 31M. Students with AP 3 or lower should take the chemistry placement exam for further recommendations.
Terms: Aut, Sum | Units: 5 | UG Reqs: GER: DB-NatSci, WAY-SMA

CHEM 31B: Chemical Principles II

Chem 31B is the second course in this two-quarter sequence, therefore only students who have completed Chem 31A may enroll in 31B. As with 31A, students will continue to engage in group problem-solving activities throughout class and participate in weekly laboratory activities. Labs and write-ups will allow students to more deeply explore and observe the different facets of chemical reactivity, including rates (kinetics), energetics (thermodynamics), and reversibility (equilibrium) of reactions. Through experimentation and discussion, students will determine what forces influence the rate of chemical reactions and learn how this can be applied to enzyme reactivity. Students will quantify chemical concentrations during a reaction, and predict the direction in which a reaction will shift in order to achieve equilibrium, including solubility equilibria. They will use these methods to estimate the possible levels of lead and other toxic metals in drinking water. Special emphasis will be p more »
Chem 31B is the second course in this two-quarter sequence, therefore only students who have completed Chem 31A may enroll in 31B. As with 31A, students will continue to engage in group problem-solving activities throughout class and participate in weekly laboratory activities. Labs and write-ups will allow students to more deeply explore and observe the different facets of chemical reactivity, including rates (kinetics), energetics (thermodynamics), and reversibility (equilibrium) of reactions. Through experimentation and discussion, students will determine what forces influence the rate of chemical reactions and learn how this can be applied to enzyme reactivity. Students will quantify chemical concentrations during a reaction, and predict the direction in which a reaction will shift in order to achieve equilibrium, including solubility equilibria. They will use these methods to estimate the possible levels of lead and other toxic metals in drinking water. Special emphasis will be placed on acid/base equilibria , allowing students to explore the role of buffers and antacids in our bodies, as well as ocean acidification and the impact on coral reefs. Students will then bring together concepts from both kinetics and equilibrium, in a deeper discussion of thermodynamics, to understand what ultimately influences the spontaneity of a reaction. Students will build a relationship between free energy, temperature, and equilibrium constants to be able to calculate the free energy of a reaction and understand how processes in our body are coupled to harness excess free energy to do useful work. Finally we will explore how we harness work from redox reactions, building both voltaic cells (i.e. batteries) and electrolytic cells in lab, and using reduction potentials to predict spontaneity and potential of a given reaction. We will look at the applications of redox chemistry in electric and fuel cell vehicles. The course's particular emphasis on understanding the driving forces of a reaction, especially the influence thermodynamics versus kinetics, will prepare students for further study of predicting organic chemical reactivity and equilibria from structure in Chem 33. Prerequisite: Chem 31A.
Terms: Win, Sum | Units: 5 | UG Reqs: GER: DB-NatSci, WAY-SMA

CHEM 33: Structure and Reactivity of Organic Molecules

An introduction to organic chemistry, the molecular foundation to understanding of life, energy, and material science. Students will learn structural and bonding models of organic molecules that provide insights into chemical, physical, and reactivity properties, in addition to their biological activities. Combining these models with kinetic and thermodynamic analyses allows molecular interconversions to be rationalized. Translation of this knowledge to more complex systems empowers the synthesis of novel molecules or materials that can positively impact our society and environment. A two-hour weekly lab section accompanies the course to introduce the techniques of separation and identification of organic compounds. Pre-requisite: CHEM 31A and 31B, or CHEM 31M, or CHEM 31X, or AP Chemistry score of 5.
Terms: Win, Spr, Sum | Units: 5 | UG Reqs: GER: DB-NatSci, WAY-SMA

CHEM 91: Exploring Chemical Research at Stanford

(Formerly 111) Preference to freshmen and sophomores. Department faculty describe their cutting-edge research and its applications.
Terms: Win | Units: 1
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